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

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

body {
  font-family: var(--font-system);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ========================================
   Typography
   ======================================== */
h1, h2, h3, h4, h5, h6 {
  line-height: var(--line-height-tight);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
}

h2 {
  font-size: clamp(1.5rem, 4vw, 2.5rem);
}

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

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

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

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

a:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* ========================================
   Floating Language Toggle (Bottom Right)
   ======================================== */
#lang-toggle {
  position: fixed;
  bottom: var(--spacing-md);
  right: var(--spacing-md);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--color-primary);
  color: white;
  border: none;
  border-radius: 50px; /* Fully rounded pill shape */
  cursor: pointer;
  font-size: var(--font-size-sm);
  font-weight: 600;
  min-width: 60px;
  min-height: 48px;
  transition: background var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
  box-shadow: var(--shadow-md);
  z-index: 1000;
}

#lang-toggle:hover {
  background: var(--color-accent);
  transform: translateY(-2px) scale(1.05);
  box-shadow: var(--shadow-lg);
}

#lang-toggle:active {
  transform: translateY(0) scale(1);
}

#lang-toggle:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
  align-items: center;
  background: radial-gradient(circle at 50% 50%, rgba(145, 70, 255, 0.3) 0%, rgba(145, 70, 255, 0) 60%),
              linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f1624 100%);
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 80vh;
  padding: var(--spacing-xl) var(--spacing-md);
  position: relative;
  text-align: center;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 50% 50%, rgba(145, 70, 255, 0.2) 0%, transparent 70%);
}

.hero > * {
  position: relative;
  z-index: 1;
}

.hero h1 {
  max-width: 900px;
  margin-bottom: var(--spacing-md);
  text-shadow: 0 0 20px rgba(145, 70, 255, 0.6);
  color: var(--color-text-hero);
  font-weight: 800;
}

.hero h3 {
  color: var(--color-text-hero);
}

.hero p {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--color-text-hero);
  max-width: 600px;
  margin-bottom: var(--spacing-lg);
  text-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
  font-weight: 500;
}

/* ========================================
   CTA Buttons
   ======================================== */
.hero-actions {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  align-items: center;
  width: 100%;
  max-width: 400px;
}

.cta {
  padding: 16px 32px;
  font-size: var(--font-size-lg);
  font-weight: 600;
  border: none;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  min-width: 44px;
  min-height: 44px;
  font-family: inherit;
  width: 100%;
}

.cta--primary {
  background: var(--color-primary);
  color: white;
  box-shadow: var(--shadow-md);
}

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

.cta--primary:active {
  transform: translateY(0);
}

.cta--secondary {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.cta--secondary:hover {
  background: var(--color-primary);
  color: white;
}

.cta:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* ========================================
   Benefits Section
   ======================================== */
.benefits {
  padding: var(--spacing-xl) var(--spacing-md);
  max-width: var(--max-width);
  margin: 0 auto;
}

.benefits h2 {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

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

.benefit-item {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.benefit-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-sm);
}

.benefit-item h3 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.animation-container {
  width: 100%;
  max-width: 400px;
  aspect-ratio: 16 / 9;
  margin: 0 auto var(--spacing-md);
  background: #f5f5f5;
  border-radius: var(--border-radius-sm);
  overflow: hidden;
}

.benefit-image {
  border-radius: var(--border-radius-sm);
  box-shadow: 0px 0px 5px 4px rgba(150, 150, 150, 0.5);
  display: block;
  height: auto;
  margin: 0 auto var(--spacing-md);
  max-width: 400px;
  max-height: 200px;
  object-fit: contain;
  width: 100%;
}

/* ========================================
   How It Works Section
   ======================================== */
.how-it-works {
  padding: var(--spacing-lg) var(--spacing-md);
  margin: 0 auto;
  background: linear-gradient(to bottom, transparent, rgba(145, 70, 255, 0.15));
}

.how-it-works h2 {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

/* YouTube Video Embed */
.video-container {
  position: relative;
  max-width: 800px;
  margin: 0 auto var(--spacing-lg);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

.video-container::before {
  content: "";
  display: block;
  padding-top: 56.25%; /* 16:9 Aspect Ratio */
}

.video-container iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

/* Responsive: limit max height on larger screens */
@media (min-width: 800px) {
  .video-container {
    max-height: 450px;
  }

  .video-container::before {
    padding-top: 0;
    display: none;
  }

  .video-container iframe {
    position: static;
    width: 100%;
    height: 450px;
  }
}

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

.step-item {
  text-align: left;
  padding: var(--spacing-sm);
}

.step-item h3 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

/* ========================================
   FAQ Section
   ======================================== */
.faq {
  padding: var(--spacing-xl) var(--spacing-md);
  max-width: 800px;
  margin: 0 auto;
}

.faq h2 {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

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

.faq-question {
  width: 100%;
  padding: var(--spacing-md);
  background: var(--color-bg);
  border: none;
  text-align: left;
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background var(--transition-fast);
  min-height: 44px;
  font-family: inherit;
}

.faq-question:hover {
  background: rgba(145, 70, 255, 0.05);
}

.faq-question[aria-expanded="true"] {
  background: rgba(145, 70, 255, 0.08);
}

.faq-question:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: -2px;
}

.faq-question::after {
  content: '▼';
  transition: transform var(--transition-medium);
  color: var(--color-primary);
}

.faq-question[aria-expanded="true"]::after {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-medium) ease;
  padding: 0 var(--spacing-sm);
}

.faq-answer.expanded {
  padding: var(--spacing-sm);
  max-height: 500px; /* Will be set dynamically via JS */
}

/* ========================================
   Bottom CTA Section
   ======================================== */
.cta-bottom {
  padding: var(--spacing-xl) var(--spacing-md);
  text-align: center;
  background: linear-gradient(135deg, rgba(145, 70, 255, 0.1), rgba(119, 44, 232, 0.1));
}

.cta-bottom h2 {
  margin-bottom: var(--spacing-md);
}

.cta-bottom .cta {
  width: auto;
  max-width: 300px;
  margin: 0 auto;
}

/* ========================================
   Footer
   ======================================== */
footer {
  padding: var(--spacing-lg) var(--spacing-md);
  text-align: center;
  border-top: 1px solid var(--color-border);
  background: var(--color-bg);
}

footer nav {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  flex-wrap: wrap;
}

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

footer a:hover {
  color: var(--color-accent);
  text-decoration: underline;
}

footer p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin: 0;
}

/* ========================================
   Language Banner
   ======================================== */
.language-banner {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background-color: var(--color-primary);
  color: white;
  padding: var(--spacing-sm) var(--spacing-md);
  box-shadow: var(--shadow-sm);
  z-index: 1000;
  animation: slideDown 0.3s ease;
}

@keyframes slideDown {
  from {
    transform: translateY(-100%);
  }
  to {
    transform: translateY(0);
  }
}

.language-banner__content {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.language-banner__message {
  margin: 0;
  font-size: var(--font-size-base);
  flex: 1;
  min-width: 200px;
}

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

.language-banner__link {
  background: white;
  border-radius: var(--border-radius-sm);
  border: none;
  color: var(--color-primary);
  cursor: pointer;
  display: inline-block;
  font-size: var(--font-size-sm);
  font-weight: 600;
  padding: 6px 12px;
  text-decoration: none;
  transition: background-color var(--transition-fast);
}

.language-banner__link:hover {
  background: rgba(255, 255, 255, 0.9);
  text-decoration: none;
}

.language-banner__dismiss {
  background: rgba(255, 255, 255, 0.2);
  border-radius: var(--border-radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: white;
  cursor: pointer;
  font-size: var(--font-size-sm);
  padding: 6px 12px;
  transition: background-color var(--transition-fast);
  line-height: 1.5;
}

.language-banner__dismiss:hover {
  background: rgba(255, 255, 255, 0.3);
}

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

/* ========================================
   Animation Styles
   ======================================== */

/* Reduced Motion Support */
@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;
  }

  /* Hide complex animations completely */
  .animation-container {
    display: none !important;
  }

  /* Show static fallback images */
  .animation-fallback {
    display: block !important;
  }
}

/* Animation Fallback Images (hidden by default, shown when reduced motion enabled) */
.animation-fallback {
  display: none;
  width: 100%;
  max-width: 400px;
  margin: 0 auto;
}

/* ========================================
   Fade-in Animation for Content
   ======================================== */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 0.6s ease-out;
}

/* ========================================
   Loading State
   ======================================== */
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.loading-spinner {
  display: inline-block;
  width: 40px;
  height: 40px;
  border: 4px solid rgba(145, 70, 255, 0.3);
  border-top-color: #9146FF;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

/* ========================================
   Lottie Animation Container Transitions
   ======================================== */
.animation-container {
  transition: opacity 0.3s ease, transform 0.3s ease;
  will-change: opacity, transform;
}

.animation-container:hover {
  opacity: 0.9;
  transform: scale(1.02);
}

/* Animation loaded state */
.animation-container.loaded {
  animation: fadeIn 0.4s ease-out;
}

/* ========================================
   Scroll-triggered Animations (Intersection Observer)
   ======================================== */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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

/* Stagger effect for multiple items */
.animate-on-scroll:nth-child(1) { transition-delay: 0.1s; }
.animate-on-scroll:nth-child(2) { transition-delay: 0.2s; }
.animate-on-scroll:nth-child(3) { transition-delay: 0.3s; }
.animate-on-scroll:nth-child(4) { transition-delay: 0.4s; }
.animate-on-scroll:nth-child(5) { transition-delay: 0.5s; }

/* ========================================
   Button Hover Animations
   ======================================== */
@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.8;
  }
}

.cta:hover {
  animation: none; /* Disable any default animations on hover */
}

/* Subtle glow effect for primary CTA */
@keyframes glow {
  0%, 100% {
    box-shadow: 0 4px 14px rgba(145, 70, 255, 0.4);
  }
  50% {
    box-shadow: 0 4px 20px rgba(145, 70, 255, 0.6);
  }
}

.cta--primary:focus {
  animation: glow 2s ease-in-out infinite;
}

/* ========================================
   Language Toggle Animation
   ======================================== */
@keyframes slideIn {
  from {
    transform: translateX(10px);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

#lang-toggle span {
  display: inline-block;
  animation: slideIn 0.3s ease-out;
}

/* ========================================
   FAQ Accordion Animation
   ======================================== */
.faq-answer {
  transition: max-height 0.3s ease-out, padding 0.3s ease-out, opacity 0.3s ease-out;
  opacity: 0;
}

.faq-answer.expanded {
  opacity: 1;
}

/* Chevron rotation */
.faq-question::after {
  transition: transform 0.3s ease;
}

/* ========================================
   Hero Section Animation
   ======================================== */
@keyframes heroFadeIn {
  0% {
    opacity: 0;
    transform: scale(0.95);
  }
  100% {
    opacity: 1;
    transform: scale(1);
  }
}

.hero h1,
.hero p,
.hero .cta {
  animation: heroFadeIn 0.8s ease-out;
}

.hero h1 {
  animation-delay: 0.1s;
}

.hero p {
  animation-delay: 0.2s;
}

.hero .cta {
  animation-delay: 0.3s;
}

/* ========================================
   Performance Optimization
   ======================================== */
/* Use GPU acceleration for animations */
.animation-container,
.benefit-item,
.cta,
#lang-toggle {
  transform: translateZ(0);
  backface-visibility: hidden;
}

/* ========================================
   High Contrast Mode Support
   ======================================== */
@media (prefers-contrast: high) {
  .animation-container {
    border: 2px solid currentColor;
  }
}

/* ========================================
   Responsive Styles - Mobile First Approach
   Base styles: 320px minimum (iPhone SE)
   ======================================== */

/* Stack elements vertically on mobile */
.benefits-grid {
  grid-template-columns: 1fr;
}

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

.hero .cta {
  width: 100%;
  max-width: 300px;
  margin: var(--spacing-sm) 0;
}

/* Reduce padding on mobile to save space */
.hero,
.benefits,
.faq,
.cta-bottom {
  padding-left: var(--spacing-sm);
  padding-right: var(--spacing-sm);
}

/* Prevent horizontal scroll on very small screens */
body {
  overflow-x: hidden;
}

/* Mobile-specific text sizes */
.hero h1 {
  font-size: 3rem;
}

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

/* ========================================
   Tablet (768px - 1023px)
   ======================================== */
@media (min-width: 768px) {
  /* Two-column layout for benefits */
  .benefits-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Two-column layout for steps */
  .steps {
    grid-template-columns: repeat(2, 1fr);
  }

  .step-item {
    text-align: center;
    padding: var(--spacing-sm);
  }

  /* Side-by-side CTA buttons on tablet and desktop */
  .hero-actions {
    flex-direction: row;
    max-width: 600px;
  }

  .hero .cta {
    width: auto;
    flex: 1;
  }

  /* Increase spacing on larger screens */
  .hero,
  .benefits,
  .faq,
  .cta-bottom {
    padding-left: var(--spacing-md);
    padding-right: var(--spacing-md);
  }

  /* Horizontal navigation in footer */
  footer nav {
    flex-direction: row;
  }

  /* Larger hero section */
  .hero {
    min-height: 75vh;
  }
}

/* ========================================
   Desktop (1024px and up)
   ======================================== */
@media (min-width: 1024px) {
  /* Three-column layout for benefits */
  .benefits-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  /* Four-column layout for steps */
  .steps {
    grid-template-columns: repeat(4, 1fr);
  }

  /* Full hero section */
  .hero {
    min-height: 80vh;
  }

  /* Larger typography on desktop */
  .hero h1 {
    font-size: 3.5rem;
  }

  .hero p {
    font-size: 1.25rem;
  }

  /* Wider max-width for content */
  .benefits {
    max-width: 1200px;
  }

  .faq {
    max-width: 900px;
  }

  /* Hover effects only on devices that support hover */
  @media (hover: hover) and (pointer: fine) {
    .benefit-item:hover {
      transform: translateY(-8px);
    }

    .cta--primary:hover {
      transform: translateY(-3px);
    }
  }
}

/* ========================================
   Large Desktop (1440px and up)
   ======================================== */
@media (min-width: 1440px) {
  /* Even wider max-width for very large screens */
  .benefits {
    max-width: 1400px;
  }

  /* Larger spacing for better visual hierarchy */
  .hero {
    padding-top: calc(var(--spacing-xl) * 1.5);
    padding-bottom: calc(var(--spacing-xl) * 1.5);
  }
}

/* ========================================
   Extra Small Mobile (Portrait, up to 374px)
   ======================================== */
/* Further reduce padding on very small screens */
.hero,
.benefits,
.faq,
.cta-bottom {
  padding-left: var(--spacing-xs);
  padding-right: var(--spacing-xs);
}

/* Smaller font sizes to fit content */
.hero h1 {
  font-size: 3rem;
}

.hero p {
  font-size: 0.95rem;
}

/* Full-width CTA buttons on tiny screens */
.cta {
  padding: 14px 24px;
  font-size: 16px;
}

/* Reduce FAQ padding */
.faq-question {
  padding: var(--spacing-sm);
}

/* Override for larger screens (375px+) */
@media (min-width: 375px) {
  .hero p {
    font-size: 1rem;
  }

  .cta {
    padding: 16px 32px;
    font-size: 18px;
  }

  .hero,
  .benefits,
  .faq,
  .cta-bottom {
    padding-left: var(--spacing-sm);
    padding-right: var(--spacing-sm);
  }
}

/* ========================================
   Landscape Orientation
   ======================================== */
@media (max-height: 600px) and (orientation: landscape) {
  /* Reduce hero height in landscape to avoid excessive scrolling */
  .hero {
    min-height: auto;
    padding-top: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
  }

  /* Smaller heading sizes in landscape */
  .hero h1 {
    margin-bottom: var(--spacing-sm);
  }

  .hero p {
    font-size: 1rem;
    margin-bottom: var(--spacing-md);
  }
}

/* ========================================
   Print Styles
   ======================================== */
@media print {
  /* Hide interactive elements when printing */
  header,
  .cta,
  .cta-bottom,
  #lang-toggle,
  .animation-container,
  .benefit-image {
    display: none !important;
  }

  /* Remove animations */
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

  /* Black text on white background for printing */
  body {
    background: white;
    color: black;
  }

  /* Add page breaks */
  section {
    page-break-inside: avoid;
  }

  /* Show FAQ answers expanded for printing */
  .faq-answer {
    max-height: none !important;
    opacity: 1 !important;
    padding: var(--spacing-md) !important;
  }

  /* Expand all FAQ items */
  .faq-question::after {
    display: none;
  }

  /* Add footer info */
  footer::after {
    content: "Printed from: " attr(data-url);
    display: block;
    margin-top: var(--spacing-md);
    font-size: 0.8rem;
  }
}

/* ========================================
   High DPI / Retina Displays
   ======================================== */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
  /* Crisp rendering on high DPI screens */
  body {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
  }

  /* Sharper borders */
  .benefit-item,
  .faq-item {
    border-width: 0.5px;
  }
}

/* ========================================
   Accessibility - Focus Indicators
   ======================================== */
/* Ensure focus indicators are visible on mobile */
button:focus-visible,
a:focus-visible {
  outline-width: 3px;
  outline-offset: 3px;
}

/* Thinner focus indicators on larger screens */
@media (min-width: 768px) {
  button:focus-visible,
  a:focus-visible {
    outline-width: 2px;
    outline-offset: 2px;
  }
}