/* Quiz Maker AI - Animations */

/* Base animation classes */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes fadeLeft {
  from { opacity: 0; transform: translateX(30px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes fadeRight {
  from { opacity: 0; transform: translateX(-30px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.9); }
  to { opacity: 1; transform: scale(1); }
}

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

@keyframes float {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  33% { transform: translateY(-12px) rotate(1deg); }
  66% { transform: translateY(-6px) rotate(-1deg); }
}

@keyframes floatReverse {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  33% { transform: translateY(8px) rotate(-1deg); }
  66% { transform: translateY(14px) rotate(1deg); }
}

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

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

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

@keyframes borderGlow {
  0%, 100% { box-shadow: 0 0 0 0 rgba(0,200,224,0); }
  50% { box-shadow: 0 0 20px 4px rgba(0,200,224,0.2); }
}

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

@keyframes progressFill {
  from { width: 0%; }
}

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

@keyframes ripple {
  0% { transform: scale(0); opacity: 1; }
  100% { transform: scale(4); opacity: 0; }
}

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s cubic-bezier(0.4,0,0.2,1), transform 0.7s cubic-bezier(0.4,0,0.2,1);
}

.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

.reveal-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity 0.7s cubic-bezier(0.4,0,0.2,1), transform 0.7s cubic-bezier(0.4,0,0.2,1);
}

.reveal-left.revealed {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity 0.7s cubic-bezier(0.4,0,0.2,1), transform 0.7s cubic-bezier(0.4,0,0.2,1);
}

.reveal-right.revealed {
  opacity: 1;
  transform: translateX(0);
}

.reveal-scale {
  opacity: 0;
  transform: scale(0.92);
  transition: opacity 0.6s cubic-bezier(0.4,0,0.2,1), transform 0.6s cubic-bezier(0.4,0,0.2,1);
}

.reveal-scale.revealed {
  opacity: 1;
  transform: scale(1);
}

/* Delay variants */
.delay-100 { transition-delay: 0.1s; }
.delay-200 { transition-delay: 0.2s; }
.delay-300 { transition-delay: 0.3s; }
.delay-400 { transition-delay: 0.4s; }
.delay-500 { transition-delay: 0.5s; }
.delay-600 { transition-delay: 0.6s; }

/* Hero animations */
.hero-text > * {
  animation: fadeUp 0.8s cubic-bezier(0.4,0,0.2,1) both;
}

.hero-text .badge { animation-delay: 0.1s; }
.hero-text h1 { animation-delay: 0.2s; }
.hero-text p { animation-delay: 0.35s; }
.hero-cta { animation-delay: 0.5s; }
.hero-stats { animation-delay: 0.65s; }

.hero-visual {
  animation: fadeLeft 0.9s cubic-bezier(0.4,0,0.2,1) 0.3s both;
}

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

.shape-float-2 {
  animation: floatReverse 8s ease-in-out infinite;
}

.shape-float-3 {
  animation: float 10s ease-in-out infinite 2s;
}

/* Gradient text animation */
.gradient-text-animated {
  background: linear-gradient(135deg, #f4f8ff 0%, #7df0ff 30%, #2979ff 60%, #00c8e0 100%);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradientShift 4s linear infinite;
}

/* Button hover effect */
.btn-primary {
  position: relative;
  overflow: hidden;
}

.btn-primary::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 0%, rgba(255,255,255,0.12) 50%, transparent 100%);
  transform: translateX(-100%);
  transition: transform 0.4s ease;
}

.btn-primary:hover::after {
  transform: translateX(100%);
}

/* Card hover glow */
.glow-on-hover {
  transition: box-shadow 0.3s ease;
}

.glow-on-hover:hover {
  box-shadow: 0 0 30px rgba(0,200,224,0.15), 0 20px 60px rgba(10,22,40,0.4);
}

/* Progress bar animation */
.animate-progress .progress-fill {
  animation: progressFill 1s cubic-bezier(0.4,0,0.2,1) both;
}

/* Number counter */
.counter-num {
  display: inline-block;
  animation: countUp 0.6s cubic-bezier(0.4,0,0.2,1) both;
}

/* Typing cursor */
.typing-cursor::after {
  content: '|';
  animation: blink 1s step-end infinite;
  color: var(--cyan);
}

/* Ripple effect */
.ripple-container {
  position: relative;
  overflow: hidden;
}

.ripple-container .ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(255,255,255,0.2);
  animation: ripple 0.6s linear;
  pointer-events: none;
}

/* Skeleton loading */
@keyframes skeletonPulse {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 1; }
}

.skeleton {
  background: var(--border);
  border-radius: 6px;
  animation: skeletonPulse 1.5s ease-in-out infinite;
}

/* Quiz option animation */
.quiz-option {
  transition: all 0.2s cubic-bezier(0.4,0,0.2,1);
}

.quiz-option:active {
  transform: scale(0.98);
}

/* Stagger children */
.stagger-children > * {
  opacity: 0;
  animation: fadeUp 0.6s cubic-bezier(0.4,0,0.2,1) both;
}

.stagger-children.revealed > *:nth-child(1) { animation-delay: 0.05s; }
.stagger-children.revealed > *:nth-child(2) { animation-delay: 0.1s; }
.stagger-children.revealed > *:nth-child(3) { animation-delay: 0.15s; }
.stagger-children.revealed > *:nth-child(4) { animation-delay: 0.2s; }
.stagger-children.revealed > *:nth-child(5) { animation-delay: 0.25s; }
.stagger-children.revealed > *:nth-child(6) { animation-delay: 0.3s; }

/* Hero card float */
.hero-main-card {
  animation: float 7s ease-in-out infinite;
}

/* Accent line */
.accent-line {
  display: inline-block;
  width: 40px;
  height: 3px;
  background: linear-gradient(90deg, var(--blue), var(--cyan));
  border-radius: 3px;
  margin-bottom: 1.5rem;
}

/* Gradient border */
.gradient-border {
  position: relative;
  border-radius: var(--radius-lg);
}

.gradient-border::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  background: linear-gradient(135deg, rgba(26,108,240,0.3), rgba(0,200,224,0.3));
  z-index: -1;
}

/* Smooth page transitions */
.page-enter {
  animation: fadeIn 0.4s ease;
}

/* Hover lift */
.hover-lift {
  transition: transform var(--transition), box-shadow var(--transition);
}

.hover-lift:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 50px rgba(0,0,0,0.3);
}

/* Animated underline */
.animated-underline {
  position: relative;
}

.animated-underline::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0;
  width: 0; height: 1.5px;
  background: var(--cyan);
  transition: width 0.3s ease;
}

.animated-underline:hover::after { width: 100%; }

/* Glow badge */
.glow-badge {
  animation: borderGlow 2.5s ease-in-out infinite;
}