/**
 * Responsive CSS and Animations for Marketing Homepage Redesign
 * Task 15: Create responsive CSS and animations
 * 
 * This file contains:
 * - Responsive breakpoints (768px, 1024px, 1280px)
 * - Mobile-first responsive layouts
 * - Smooth transition animations (300ms standard)
 * - Hover effects for cards and buttons
 * - Gradient backgrounds and text
 * - Floating elements animation
 * - Parallax effect for hero image
 * - 60fps performance optimizations
 * - Prefers-reduced-motion support
 */

/* ============================================
   BREAKPOINT DEFINITIONS
   ============================================ */
:root {
  /* Breakpoints */
  --breakpoint-mobile: 768px;
  --breakpoint-tablet: 1024px;
  --breakpoint-desktop: 1280px;
  
  /* Animation Timings */
  --transition-fast: 150ms;
  --transition-base: 300ms;
  --transition-slow: 500ms;
  --transition-timing: cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Animation Performance */
  --will-change-transform: transform;
  --will-change-opacity: opacity;
}

/* ============================================
   SMOOTH TRANSITION ANIMATIONS (300ms standard)
   ============================================ */

/* Base transitions for all interactive elements */
a,
button,
.btn,
.card,
.feature-card,
.pricing-card,
.nav-dropdown-trigger,
.dropdown-item,
input,
textarea,
select {
  transition: all var(--transition-base) var(--transition-timing);
}

/* Fast transitions for hover states */
.btn:hover,
.feature-card:hover,
.trust-stat-item:hover {
  transition: all var(--transition-fast) var(--transition-timing);
}

/* Slow transitions for complex animations */
.hero-image,
.dashboard-preview,
.browser-mockup {
  transition: all var(--transition-slow) var(--transition-timing);
}

/* ============================================
   HOVER EFFECTS FOR CARDS AND BUTTONS
   ============================================ */

/* Card Hover Effects with Lift */
.feature-card,
.pricing-card,
.dashboard-card,
.case-study-card,
.tool-card {
  position: relative;
  transition: transform var(--transition-base) var(--transition-timing),
              box-shadow var(--transition-base) var(--transition-timing),
              border-color var(--transition-base) var(--transition-timing);
  will-change: transform;
}

.feature-card:hover,
.pricing-card:hover,
.dashboard-card:hover,
.case-study-card:hover,
.tool-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(37, 99, 235, 0.15);
  border-color: var(--color-primary);
}

/* Button Hover Effects */
.btn {
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-base) var(--transition-timing),
              box-shadow var(--transition-base) var(--transition-timing),
              background var(--transition-base) var(--transition-timing);
  will-change: transform;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary:hover {
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.4);
}

.btn-secondary:hover {
  border-color: var(--color-primary);
  background: rgba(37, 99, 235, 0.05);
}

/* Ripple Effect on Button Click */
.btn::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.btn:active::before {
  width: 300px;
  height: 300px;
}

/* Icon Hover Effects */
.feature-icon,
.trust-stat-icon {
  transition: transform var(--transition-base) var(--transition-timing),
              background var(--transition-base) var(--transition-timing);
  will-change: transform;
}

.feature-card:hover .feature-icon,
.trust-stat-item:hover .trust-stat-icon {
  transform: scale(1.1) rotate(5deg);
}

/* ============================================
   GRADIENT BACKGROUNDS AND TEXT
   ============================================ */

/* Gradient Text Effects */
.gradient-text,
.hero-title,
.section-header h2,
.stat-number,
.trust-stat-number,
.price-amount {
  background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-fill-color: transparent;
}

/* Animated Gradient Backgrounds */
.gradient-bg-animated {
  background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 50%, #dbeafe 100%);
  background-size: 200% 200%;
  animation: gradientShift 15s ease infinite;
}

@keyframes gradientShift {
  0%, 100% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
}

/* Gradient Overlays */
.gradient-overlay {
  position: relative;
}

.gradient-overlay::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.05) 0%, rgba(59, 130, 246, 0.05) 100%);
  opacity: 0;
  transition: opacity var(--transition-base) var(--transition-timing);
  pointer-events: none;
}

.gradient-overlay:hover::before {
  opacity: 1;
}

/* ============================================
   FLOATING ELEMENTS ANIMATION
   ============================================ */

/* Floating Animation for Background Elements */
@keyframes float {
  0%, 100% {
    transform: translateY(0) rotate(0deg);
  }
  33% {
    transform: translateY(-20px) rotate(120deg);
  }
  66% {
    transform: translateY(-10px) rotate(240deg);
  }
}

.floating-element {
  animation: float 20s ease-in-out infinite;
  will-change: transform;
}

/* Floating Shapes in Hero and CTA Sections */
.hero::before,
.hero-redesign::before,
.cta::before {
  animation: float 20s ease-in-out infinite;
}

/* Subtle Float for Cards */
@keyframes floatSubtle {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-5px);
  }
}

.float-subtle {
  animation: floatSubtle 6s ease-in-out infinite;
}

/* ============================================
   PARALLAX EFFECT FOR HERO IMAGE
   ============================================ */

/* Parallax Container */
.parallax-container {
  position: relative;
  overflow: hidden;
}

.parallax-image {
  transform: none !important;
  transition: none;
}

/* 3D Perspective Effect */
.dashboard-preview {
  perspective: 1000px;
  transform-style: preserve-3d;
}

.dashboard-preview img {
  transition: transform var(--transition-base) var(--transition-timing);
  will-change: transform;
}

.dashboard-preview:hover img {
  transform: perspective(1000px) rotateY(0deg) scale(1.02);
}

/* ============================================
   FADE-IN ANIMATIONS ON SCROLL
   ============================================ */

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

.fade-in {
  opacity: 0;
  animation: fadeInUp 0.8s ease-out forwards;
}

/* Staggered Animation Delays */
.fade-in:nth-child(1) { animation-delay: 0.1s; }
.fade-in:nth-child(2) { animation-delay: 0.2s; }
.fade-in:nth-child(3) { animation-delay: 0.3s; }
.fade-in:nth-child(4) { animation-delay: 0.4s; }
.fade-in:nth-child(5) { animation-delay: 0.5s; }
.fade-in:nth-child(6) { animation-delay: 0.6s; }

/* Fade In Left */
@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.fade-in-left {
  animation: fadeInLeft 0.8s ease-out forwards;
}

/* Fade In Right */
@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.fade-in-right {
  animation: fadeInRight 0.8s ease-out forwards;
}

/* Scale In Animation */
@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.scale-in {
  animation: scaleIn 0.6s ease-out forwards;
}

/* ============================================
   PULSE ANIMATION FOR TRUST BADGES
   ============================================ */

@keyframes pulse {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.7;
    transform: scale(1.05);
  }
}

.pulse-dot {
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse-ring {
  0% {
    width: 100%;
    height: 100%;
    opacity: 1;
  }
  100% {
    width: 200%;
    height: 200%;
    opacity: 0;
  }
}

.pulse-dot::before {
  animation: pulse-ring 2s ease-in-out infinite;
}

/* ============================================
   ANIMATED COUNTERS FOR STATISTICS
   ============================================ */

/* Counter Animation (handled by JavaScript) */
.counter {
  display: inline-block;
  will-change: contents;
}

/* Shimmer Effect for Loading Numbers */
@keyframes shimmer {
  0% {
    background-position: -1000px 0;
  }
  100% {
    background-position: 1000px 0;
  }
}

.shimmer {
  background: linear-gradient(90deg, 
    var(--color-surface) 0%, 
    var(--color-border) 50%, 
    var(--color-surface) 100%);
  background-size: 1000px 100%;
  animation: shimmer 2s infinite;
}

/* ============================================
   ACCORDION EXPAND/COLLAPSE ANIMATIONS
   ============================================ */

/* Smooth Height Transition */
.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow) var(--transition-timing),
              padding var(--transition-base) var(--transition-timing);
}

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

/* Rotate Icon on Expand */
.accordion-icon {
  transition: transform var(--transition-base) var(--transition-timing);
}

.accordion-item.active .accordion-icon {
  transform: rotate(180deg);
}

/* ============================================
   MODAL AND OVERLAY ANIMATIONS
   ============================================ */

/* Modal Fade In */
@keyframes modalFadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

/* Modal Slide Up */
@keyframes modalSlideUp {
  from {
    opacity: 0;
    transform: translateY(50px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.modal-overlay {
  animation: modalFadeIn var(--transition-base) ease-out;
}

.modal-content {
  animation: modalSlideUp var(--transition-base) ease-out;
}

/* ============================================
   MOBILE-FIRST RESPONSIVE LAYOUTS
   ============================================ */

/* Base Mobile Styles (< 768px) */
/* All base styles are mobile-first by default */

/* Tablet Styles (768px - 1024px) */
@media (min-width: 768px) {
  /* Grid Layouts */
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .trust-bar-grid {
    grid-template-columns: repeat(4, 1fr);
  }
  
  .pricing-features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  /* Hero Section */
  .hero-content-redesign {
    grid-template-columns: 60% 40%;
  }
  
  /* Typography Scaling */
  .hero-title-redesign {
    font-size: 2.75rem;
  }
  
  .section-header h2 {
    font-size: 2.5rem;
  }
}

/* Desktop Styles (1024px - 1280px) */
@media (min-width: 1024px) {
  /* Grid Layouts */
  .features-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .features-grid-expandable {
    grid-template-columns: repeat(3, 1fr);
  }
  
  /* Hero Section */
  .hero-title-redesign {
    font-size: 3.5rem;
  }
  
  .section-header h2 {
    font-size: 3rem;
  }
  
  /* Hover Effects Enabled */
  .feature-card:hover {
    transform: translateY(-8px);
  }
  
  .btn:hover {
    transform: translateY(-2px);
  }
}

/* Large Desktop Styles (> 1280px) */
@media (min-width: 1280px) {
  /* Container Max Width */
  .container {
    max-width: 1280px;
  }
  
  /* Typography Scaling */
  .hero-title-redesign {
    font-size: 4rem;
  }
  
  .section-header h2 {
    font-size: 3.5rem;
  }
  
  /* Spacing Adjustments */
  .hero-redesign {
    padding: 3rem 0 6rem;
  }
  
  .features,
  .pricing,
  .cta {
    padding: 6rem 0;
  }
}

/* ============================================
   MOBILE RESPONSIVE OVERRIDES (< 768px)
   ============================================ */

@media (max-width: 767px) {
  /* Disable Hover Effects on Mobile */
  .feature-card:hover,
  .pricing-card:hover,
  .dashboard-card:hover {
    transform: none;
  }
  
  /* Stack Layouts */
  .hero-content-redesign,
  .booking-showcase-content,
  .mobile-app-content {
    grid-template-columns: 1fr;
  }
  
  /* Full Width Elements */
  .btn-block-mobile {
    width: 100%;
    display: block;
  }
  
  /* Reduce Animation Complexity */
  .floating-element {
    animation: none;
  }
  
  /* Simplify Parallax on Mobile */
  .parallax-image {
    transform: none !important;
  }
}

/* ============================================
   TABLET RESPONSIVE (768px - 1024px)
   ============================================ */

@media (min-width: 768px) and (max-width: 1024px) {
  /* 2-Column Grids */
  .features-grid-expandable {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .marketing-tools-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .why-fleetiqo-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  /* Typography Adjustments */
  .hero-title-redesign {
    font-size: 3rem;
  }
  
  .section-header h2 {
    font-size: 2.5rem;
  }
}

/* ============================================
   PERFORMANCE OPTIMIZATIONS (60fps)
   ============================================ */

/* Use GPU Acceleration for Animations */
.feature-card,
.btn,
.dashboard-preview,
.parallax-image,
.floating-element {
  transform: translateZ(0);
  backface-visibility: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Optimize Repaints */
.hero-image,
.browser-mockup,
.phone-mockup {
  contain: layout style paint;
}

/* Reduce Animation Complexity on Lower-End Devices */
@media (max-width: 768px) {
  /* Simplify Animations */
  * {
    animation-duration: 0.3s !important;
  }
  
  /* Disable Complex Transforms */
  .dashboard-preview:hover img {
    transform: none;
  }
}

/* ============================================
   PREFERS-REDUCED-MOTION SUPPORT
   ============================================ */

@media (prefers-reduced-motion: reduce) {
  /* Disable All Animations */
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  
  /* Remove Floating Animations */
  .floating-element,
  .hero::before,
  .hero-redesign::before,
  .cta::before {
    animation: none !important;
  }
  
  /* Remove Parallax Effects */
  .parallax-image {
    transform: none !important;
  }
  
  /* Remove Pulse Animations */
  .pulse-dot,
  .pulse-dot::before {
    animation: none !important;
  }
  
  /* Simplify Hover Effects */
  .feature-card:hover,
  .btn:hover {
    transform: none !important;
  }
  
  /* Keep Essential Transitions */
  a,
  button,
  input,
  select,
  textarea {
    transition: color 0.15s ease, background-color 0.15s ease, border-color 0.15s ease !important;
  }
}

/* ============================================
   TOUCH DEVICE OPTIMIZATIONS
   ============================================ */

@media (hover: none) and (pointer: coarse) {
  /* Larger Touch Targets */
  a,
  button,
  .btn,
  .nav-dropdown-trigger,
  .accordion-trigger {
    min-height: 44px;
    min-width: 44px;
  }
  
  /* Remove Hover Effects */
  .feature-card:hover,
  .dashboard-card:hover,
  .btn:hover {
    transform: none;
  }
  
  /* Better Tap Highlighting */
  * {
    -webkit-tap-highlight-color: rgba(37, 99, 235, 0.1);
  }
  
  /* Disable Parallax on Touch Devices */
  .parallax-image {
    transform: none !important;
  }
}

/* ============================================
   HIGH DPI SCREENS (RETINA)
   ============================================ */

@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
  /* Sharper Borders */
  .feature-card,
  .pricing-card,
  .dashboard-card {
    border-width: 0.5px;
  }
  
  /* Crisper Shadows */
  .btn-primary {
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35);
  }
}

/* ============================================
   LANDSCAPE MOBILE OPTIMIZATION
   ============================================ */

@media (max-width: 768px) and (orientation: landscape) {
  /* Reduce Vertical Padding */
  .hero-redesign,
  .features,
  .pricing {
    padding: 2rem 0;
  }
  
  /* Horizontal Layouts */
  .hero-content-redesign {
    grid-template-columns: 1fr 1fr;
  }
  
  .trust-bar-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ============================================
   PRINT STYLES
   ============================================ */

@media print {
  /* Disable Animations */
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
  
  /* Remove Floating Elements */
  .floating-element,
  .hero::before,
  .cta::before {
    display: none !important;
  }
  
  /* Flatten Shadows */
  .feature-card,
  .pricing-card {
    box-shadow: none !important;
    border: 1px solid #ddd !important;
  }
}

/* ============================================
   UTILITY CLASSES FOR ANIMATIONS
   ============================================ */

/* Animation Delays */
.delay-100 { animation-delay: 0.1s; }
.delay-200 { animation-delay: 0.2s; }
.delay-300 { animation-delay: 0.3s; }
.delay-400 { animation-delay: 0.4s; }
.delay-500 { animation-delay: 0.5s; }

/* Animation Durations */
.duration-fast { animation-duration: 150ms; }
.duration-base { animation-duration: 300ms; }
.duration-slow { animation-duration: 500ms; }

/* Transform Utilities */
.hover-lift:hover {
  transform: translateY(-4px);
}

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

.hover-rotate:hover {
  transform: rotate(5deg);
}

/* Transition Utilities */
.transition-all {
  transition: all var(--transition-base) var(--transition-timing);
}

.transition-transform {
  transition: transform var(--transition-base) var(--transition-timing);
}

.transition-opacity {
  transition: opacity var(--transition-base) var(--transition-timing);
}

/* ============================================
   SMOOTH SCROLLING
   ============================================ */

html {
  scroll-behavior: smooth;
}

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

/* ============================================
   FOCUS VISIBLE FOR ACCESSIBILITY
   ============================================ */

*:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  transition: outline-offset var(--transition-fast) ease;
}

/* Remove outline for mouse users */
*:focus:not(:focus-visible) {
  outline: none;
}