@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

* {
  font-family: 'Inter', sans-serif;
}

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

.stagger-1 { animation-delay: 0.1s; }
.stagger-2 { animation-delay: 0.2s; }
.stagger-3 { animation-delay: 0.3s; }
.stagger-4 { animation-delay: 0.4s; }

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-gradient {
  background-size: 400% 400%;
  animation: gradient 8s ease infinite;
}

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

.card-hover {
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  transform-style: preserve-3d;
}

.card-hover:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.card-hover:active {
  transform: translateY(-4px) scale(1.01);
}

.slide-in-right {
  animation: slideInRight 0.5s ease-out forwards;
}

.slide-out-left {
  animation: slideOutLeft 0.3s ease-in forwards;
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(100px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideOutLeft {
  from {
    opacity: 1;
    transform: translateX(0);
  }
  to {
    opacity: 0;
    transform: translateX(-100px);
  }
}

.text-shadow {
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 3rem;
  }
}

@media (max-width: 640px) {
  .hero-title {
    font-size: 2.5rem;
  }
}

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

::-webkit-scrollbar-track {
  background: rgba(55, 65, 81, 0.3);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb {
  background: rgba(59, 130, 246, 0.5);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(59, 130, 246, 0.7);
}

/* Loading animations */
.pulse-slow {
  animation: pulse 3s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

.bounce-slow {
  animation: bounce 2s infinite;
}

/* Question animations */
.question-enter {
  animation: questionEnter 0.5s ease-out forwards;
}

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

/* Option hover effects */
.option-btn {
  position: relative;
  overflow: hidden;
}

.option-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  transition: left 0.5s;
}

.option-btn:hover::before {
  left: 100%;
}

/* Progress bar animation */
.progress-bar {
  transition: width 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Modal backdrop blur */
.modal-backdrop {
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

/* Floating elements */
.float {
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-20px); }
}

/* Glow effects */
.glow {
  box-shadow: 0 0 20px rgba(59, 130, 246, 0.3);
}

.glow-green {
  box-shadow: 0 0 20px rgba(16, 185, 129, 0.3);
}

.glow-red {
  box-shadow: 0 0 20px rgba(239, 68, 68, 0.3);
}

/* Typing animation */
.typing {
  overflow: hidden;
  border-right: 2px solid rgba(59, 130, 246, 0.7);
  white-space: nowrap;
  animation: typing 3.5s steps(40, end), blink-caret 0.75s step-end infinite;
}

@keyframes typing {
  from { width: 0; }
  to { width: 100%; }
}

@keyframes blink-caret {
  from, to { border-color: transparent; }
  50% { border-color: rgba(59, 130, 246, 0.7); }
}

/* Success/Error message animations */
.slide-down {
  animation: slideDown 0.3s ease-out forwards;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Button press effect */
.btn-press {
  transform: scale(0.95);
  transition: transform 0.1s ease-in-out;
}

/* Particle background */
.particles {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

.particle {
  position: absolute;
  width: 4px;
  height: 4px;
  background: rgba(59, 130, 246, 0.3);
  border-radius: 50%;
  animation: float-particle 20s infinite linear;
}

@keyframes float-particle {
  0% {
    transform: translateY(100vh) rotate(0deg);
    opacity: 0;
  }
  10% {
    opacity: 1;
  }
  90% {
    opacity: 1;
  }
  100% {
    transform: translateY(-100px) rotate(360deg);
    opacity: 0;
  }
}

/* Enhanced card effects */
.card-3d {
  transform-style: preserve-3d;
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.card-3d:hover {
  transform: rotateY(5deg) rotateX(5deg) translateZ(20px);
}

/* Gradient text effects */
.gradient-text {
  background: linear-gradient(45deg, #3b82f6, #8b5cf6, #ec4899);
  background-size: 200% 200%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: gradient-shift 3s ease infinite;
}

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

/* Loading skeleton */
.skeleton {
  background: linear-gradient(90deg, rgba(55, 65, 81, 0.3) 25%, rgba(75, 85, 99, 0.3) 50%, rgba(55, 65, 81, 0.3) 75%);
  background-size: 200% 100%;
  animation: loading 1.5s infinite;
}

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

/* Enhanced focus states */
.focus-ring:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.5);
}

/* Smooth transitions */
.transition-smooth {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Mobile optimizations */
@media (max-width: 640px) {
  .card-hover:hover {
    transform: translateY(-4px) scale(1.01);
  }

  .modal-backdrop {
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
  }
}

/* Print styles */
@media print {
  .no-print {
    display: none !important;
  }

  body {
    background: white !important;
    color: black !important;
  }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .card-hover {
    border: 2px solid currentColor;
  }

  .bg-gradient-to-br {
    background: #1e293b !important;
  }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Selection styles */
.selectable-item {
  cursor: pointer;
  transition: all 0.2s ease;
}

.selectable-item.selected {
  background-color: rgba(59, 130, 246, 0.2) !important;
  border-color: rgba(59, 130, 246, 0.5) !important;
}

.selectable-item:hover {
  background-color: rgba(75, 85, 99, 0.3) !important;
}

/* ASK Anything Chat Styles */
#askAnythingHistory {
  scrollbar-width: thin;
  scrollbar-color: rgba(99, 102, 241, 0.5) rgba(15, 23, 42, 0.5);
}

#askAnythingHistory::-webkit-scrollbar {
  width: 6px;
}

#askAnythingHistory::-webkit-scrollbar-track {
  background: rgba(15, 23, 42, 0.3);
  border-radius: 3px;
}

#askAnythingHistory::-webkit-scrollbar-thumb {
  background: rgba(99, 102, 241, 0.4);
  border-radius: 3px;
}

#askAnythingHistory::-webkit-scrollbar-thumb:hover {
  background: rgba(99, 102, 241, 0.6);
}

.chat-message {
  animation: fadeInMessage 0.3s ease-out;
}

@keyframes fadeInMessage {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

#askAnythingInput:focus {
  box-shadow: 0 0 0 2px rgba(34, 197, 94, 0.2);
}

/* Typing indicator animation */
@keyframes bounceChat {
  0%, 80%, 100% {
    transform: scale(0);
  }
  40% {
    transform: scale(1);
  }
}

.typing-dot {
  animation: bounceChat 1.4s infinite ease-in-out;
}

.typing-dot:nth-child(1) {
  animation-delay: -0.32s;
}

.typing-dot:nth-child(2) {
  animation-delay: -0.16s;
}

/* Chat message animations */
.message-user {
  animation: slideInRight 0.3s ease-out;
}

.message-ai {
  animation: slideInLeft 0.3s ease-out;
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Math display styles for ASK Anything */
.math-display {
  margin: 10px 0;
  padding: 8px;
  background-color: rgba(0, 0, 0, 0.1);
  border-radius: 6px;
  border-left: 3px solid rgba(59, 130, 246, 0.5);
  overflow-x: auto;
}

/* MathJax styling overrides */
#askAnythingHistory .MathJax {
  color: inherit !important;
}

#askAnythingHistory .MathJax_Display {
  margin: 0.8em 0 !important;
}/* Build: 1759310895 */

/* Verse-aware stems: newline characters in a stem render as real line breaks
   (Literature poetry/drama items). pre-line collapses ordinary spaces but
   honors newlines — prose stems are unchanged. */
#questionStem { white-space: pre-line; }