/* Custom Styles for LinguaBoost */

/* Base Styles */
:root {
  --primary: #4f46e5;
  --primary-dark: #3730a3;
  --primary-light: #818cf8;
  --secondary: #10b981;
  --secondary-dark: #059669;
  --secondary-light: #34d399;
  --accent: #f59e0b;
  --accent-dark: #d97706;
  --accent-light: #fbbf24;
  --dark: #1f2937;
  --light: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  --transition-fast: 0.3s;
  --transition-medium: 0.5s;
  --transition-slow: 0.8s;
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-out: cubic-bezier(0, 0, 0.2, 1);
  --ease-in: cubic-bezier(0.4, 0, 1, 1);
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --shadow-md:
    0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg:
    0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl:
    0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

/* Smooth scrolling */
html {
  scroll-behavior: smooth;
}

/* Typography enhancements */
h1,
h2,
h3,
h4,
h5,
h6 {
  letter-spacing: -0.025em;
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInFromLeft {
  from {
    opacity: 0;
    transform: translateX(-50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInFromRight {
  from {
    opacity: 0;
    transform: translateX(50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes floatAnimation {
  0% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-15px);
  }
  100% {
    transform: translateY(0px);
  }
}

@keyframes float {
  0% {
    transform: translateY(0px) rotate(0deg);
  }
  50% {
    transform: translateY(-10px) rotate(2deg);
  }
  100% {
    transform: translateY(0px) rotate(0deg);
  }
}

@keyframes float-slow {
  0% {
    transform: translateY(0px) rotate(0deg);
  }
  50% {
    transform: translateY(-15px) rotate(-2deg);
  }
  100% {
    transform: translateY(0px) rotate(0deg);
  }
}

@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.8;
  }
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@keyframes shimmer {
  0% {
    background-position: -200% 0;
  }
  100% {
    background-position: 200% 0;
  }
}

/* Animation Classes */
.animate-float {
  animation: float 6s ease-in-out infinite;
}

.animate-float-slow {
  animation: float-slow 8s ease-in-out infinite;
}

.animate-pulse {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

.animate-spin {
  animation: spin 20s linear infinite;
}

.animate-shimmer {
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0) 0%,
    rgba(255, 255, 255, 0.2) 50%,
    rgba(255, 255, 255, 0) 100%
  );
  background-size: 200% 100%;
  animation: shimmer 2s infinite;
}

/* Apply animations to sections when they come into view */
.animate-on-scroll {
  opacity: 0;
  transition:
    opacity var(--transition-medium) var(--ease-out),
    transform var(--transition-medium) var(--ease-out);
}

.animate-on-scroll.fade-in {
  animation: fadeIn var(--transition-slow) var(--ease-out) forwards;
}

.animate-on-scroll.slide-in-left {
  animation: slideInFromLeft var(--transition-slow) var(--ease-out) forwards;
}

.animate-on-scroll.slide-in-right {
  animation: slideInFromRight var(--transition-slow) var(--ease-out) forwards;
}

/* Hero section image float animation */
.hero-image {
  animation: floatAnimation 8s ease-in-out infinite;
  transition: transform var(--transition-medium) var(--ease-in-out);
}

/* Custom hover effects */
.hover-lift {
  transition:
    transform var(--transition-fast) var(--ease-in-out),
    box-shadow var(--transition-fast) var(--ease-in-out);
}

.hover-lift:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

/* Custom card styles */
.feature-card {
  transition: all var(--transition-medium) var(--ease-in-out);
  border: 1px solid transparent;
}

.feature-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-xl);
  border-color: var(--gray-200);
}

.dark .feature-card:hover {
  border-color: var(--gray-700);
}

/* Testimonial cards */
.testimonial-card {
  transition: all var(--transition-medium) var(--ease-in-out);
  border: 1px solid transparent;
}

.testimonial-card:hover {
  transform: scale(1.03) translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--gray-200);
}

.dark .testimonial-card:hover {
  border-color: var(--gray-700);
}

/* FAQ animation */
.group-open\:animate-fadeIn {
  animation: fadeIn 0.5s var(--ease-out) forwards;
}

details summary {
  transition: all var(--transition-fast) var(--ease-in-out);
}

details summary:hover {
  color: var(--primary);
}

details[open] summary {
  margin-bottom: 10px;
  color: var(--primary);
}

/* Pricing cards */
.pricing-card {
  transition: all var(--transition-medium) var(--ease-in-out);
  border: 1px solid transparent;
}

.pricing-card:hover:not(.featured) {
  transform: translateY(-10px) scale(1.02);
  box-shadow: var(--shadow-xl);
  border-color: var(--gray-200);
}

.dark .pricing-card:hover:not(.featured) {
  border-color: var(--gray-700);
}

.featured {
  position: relative;
  z-index: 10;
  box-shadow: var(--shadow-xl);
}

/* Mobile app section */
.app-screenshot {
  transition: all var(--transition-medium) var(--ease-in-out);
  will-change: transform;
}

.app-screenshot:hover {
  transform: translateY(-15px) scale(1.05) rotate(2deg);
}

/* Custom button styles */
.btn-primary {
  transition: all var(--transition-fast) var(--ease-in-out);
  position: relative;
  overflow: hidden;
  will-change: transform, box-shadow;
}

.btn-primary::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 5px;
  height: 5px;
  background: rgba(255, 255, 255, 0.5);
  opacity: 0;
  border-radius: 100%;
  transform: scale(1, 1) translate(-50%);
  transform-origin: 50% 50%;
}

.btn-primary:hover::after {
  animation: ripple 1s ease-out;
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: var(--shadow-md);
}

@keyframes ripple {
  0% {
    transform: scale(0, 0);
    opacity: 0.5;
  }
  100% {
    transform: scale(20, 20);
    opacity: 0;
  }
}

/* Gradient text */
.gradient-text {
  background: linear-gradient(90deg, var(--primary) 0%, var(--secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  color: transparent;
}

/* Glassmorphism */
.glass {
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.dark .glass {
  background: rgba(17, 24, 39, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

/* Dark mode transition */
.dark-mode-transition {
  transition:
    background-color var(--transition-medium) var(--ease-in-out),
    color var(--transition-medium) var(--ease-in-out),
    border-color var(--transition-medium) var(--ease-in-out);
}

/* Custom scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--gray-100);
}

::-webkit-scrollbar-thumb {
  background: var(--primary);
  border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary-dark);
}

/* Dark mode scrollbar */
.dark ::-webkit-scrollbar-track {
  background: var(--gray-800);
}

.dark ::-webkit-scrollbar-thumb {
  background: var(--primary-light);
}

.dark ::-webkit-scrollbar-thumb:hover {
  background: var(--primary);
}

/* Intersection Observer JavaScript will add these classes */
.fade-in-section {
  opacity: 1;
  transition:
    opacity 0.3s ease,
    transform 0.3s ease;
}

.fade-in-section.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Enhanced focus styles */
a:focus,
button:focus,
input:focus,
select:focus,
textarea:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.3);
  transition: box-shadow 0.2s ease-in-out;
}

.dark a:focus,
.dark button:focus,
.dark input:focus,
.dark select:focus,
.dark textarea:focus {
  box-shadow: 0 0 0 3px rgba(129, 140, 248, 0.3);
}

/* Improved button styles */
button,
.button {
  position: relative;
  overflow: hidden;
  transform: translateZ(0);
}

button::after,
.button::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(255, 255, 255, 0.1);
  opacity: 0;
  transition: opacity 0.3s ease;
}

button:hover::after,
.button:hover::after {
  opacity: 1;
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .hero-heading {
    font-size: 2.5rem;
  }

  .section-heading {
    font-size: 2rem;
  }

  .animate-float,
  .animate-float-slow {
    animation: none;
  }

  .app-screenshot:hover {
    transform: none;
  }
}

/* Custom animations for specific elements */
.hero-section .fade-in-section:nth-child(1) {
  transition-delay: 0.1s;
}

.hero-section .fade-in-section:nth-child(2) {
  transition-delay: 0.2s;
}

.hero-section .fade-in-section:nth-child(3) {
  transition-delay: 0.3s;
}

/* Underline animation for links */
.nav-link {
  position: relative;
}

.nav-link::after {
  content: "";
  position: absolute;
  width: 0;
  height: 2px;
  bottom: -2px;
  left: 0;
  background-color: var(--primary);
  transition: width 0.3s ease;
}

.nav-link:hover::after {
  width: 100%;
}

/* Shimmer effect for CTA buttons */
.cta-button {
  position: relative;
  overflow: hidden;
}

.cta-button::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    to right,
    rgba(255, 255, 255, 0) 0%,
    rgba(255, 255, 255, 0.3) 50%,
    rgba(255, 255, 255, 0) 100%
  );
  transition: left 0.7s ease;
}

.cta-button:hover::before {
  left: 100%;
}

/* Enhanced card hover effects */
.enhanced-card {
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.enhanced-card:hover {
  transform: translateY(-15px) scale(1.03);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

/* Animated gradient background */
.animated-gradient {
  background: linear-gradient(-45deg, #4f46e5, #10b981, #f59e0b, #ef4444);
  background-size: 400% 400%;
  animation: gradient 15s ease infinite;
}

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