/* ToolMaster Quiz - Animation Styles */
/* Smooth, modern animations for enhanced user experience */

/* Keyframe Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

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

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes bounce {
    0%, 20%, 53%, 80%, 100% {
        transform: translate3d(0, 0, 0);
    }
    40%, 43% {
        transform: translate3d(0, -30px, 0);
    }
    70% {
        transform: translate3d(0, -15px, 0);
    }
    90% {
        transform: translate3d(0, -4px, 0);
    }
}

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

@keyframes shake {
    0%, 100% {
        transform: translateX(0);
    }
    10%, 30%, 50%, 70%, 90% {
        transform: translateX(-10px);
    }
    20%, 40%, 60%, 80% {
        transform: translateX(10px);
    }
}

@keyframes glow {
    0% {
        box-shadow: 0 0 5px rgba(37, 99, 235, 0.3);
    }
    50% {
        box-shadow: 0 0 20px rgba(37, 99, 235, 0.6), 0 0 30px rgba(37, 99, 235, 0.4);
    }
    100% {
        box-shadow: 0 0 5px rgba(37, 99, 235, 0.3);
    }
}

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

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

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

/* Animation Classes */
.animate-fade-in {
    animation: fadeIn 0.8s ease-out forwards;
    opacity: 0;
}

.animate-fade-in-delay {
    animation: fadeIn 0.8s ease-out 0.3s forwards;
    opacity: 0;
}

.animate-fade-in-delay-2 {
    animation: fadeIn 0.8s ease-out 0.6s forwards;
    opacity: 0;
}

.animate-slide-in {
    animation: slideIn 1s ease-out forwards;
    opacity: 0;
}

.animate-slide-in-left {
    animation: slideInLeft 1s ease-out forwards;
    opacity: 0;
}

.animate-scale-in {
    animation: scaleIn 0.6s ease-out forwards;
    opacity: 0;
}

.animate-bounce {
    animation: bounce 1s ease-in-out;
}

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

.animate-shake {
    animation: shake 0.5s ease-in-out;
}

.animate-glow {
    animation: glow 2s ease-in-out infinite;
}

.animate-float {
    animation: float 3s ease-in-out infinite;
}

.animate-rotate {
    animation: rotate 2s linear infinite;
}

.animate-slide-up {
    animation: slideUp 0.8s ease-out forwards;
    opacity: 0;
}

/* Scroll-triggered animations */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.8s ease-out;
}

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

/* Hover animations */
.hover-lift {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hover-lift:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.hover-scale {
    transition: transform 0.3s ease;
}

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

.hover-glow {
    transition: box-shadow 0.3s ease;
}

.hover-glow:hover {
    box-shadow: 0 0 20px rgba(37, 99, 235, 0.4);
}

/* Button animations */
.btn-animate {
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

.btn-animate::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

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

/* Loading animations */
.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: rotate 1s linear infinite;
}

.loading-dots {
    display: inline-block;
}

.loading-dots::after {
    content: '';
    animation: dots 1.5s steps(4, end) infinite;
}

@keyframes dots {
    0%, 20% {
        content: '';
    }
    40% {
        content: '.';
    }
    60% {
        content: '..';
    }
    80%, 100% {
        content: '...';
    }
}

/* Progress bar animation */
.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--gray-200);
    border-radius: 4px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 4px;
    transition: width 0.5s ease;
    position: relative;
}

.progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% {
        transform: translateX(-100%);
    }
    100% {
        transform: translateX(100%);
    }
}

/* Card flip animation */
.flip-card {
    perspective: 1000px;
    width: 100%;
    height: 200px;
}

.flip-card-inner {
    position: relative;
    width: 100%;
    height: 100%;
    text-align: center;
    transition: transform 0.6s;
    transform-style: preserve-3d;
}

.flip-card:hover .flip-card-inner {
    transform: rotateY(180deg);
}

.flip-card-front, .flip-card-back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.flip-card-back {
    transform: rotateY(180deg);
    background: var(--primary-color);
    color: white;
}

/* Typewriter effect */
.typewriter {
    overflow: hidden;
    border-right: 2px solid var(--primary-color);
    white-space: nowrap;
    margin: 0 auto;
    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: var(--primary-color);
    }
}

/* Stagger animation for lists */
.stagger-animation > * {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeIn 0.6s ease-out forwards;
}

.stagger-animation > *:nth-child(1) { animation-delay: 0.1s; }
.stagger-animation > *:nth-child(2) { animation-delay: 0.2s; }
.stagger-animation > *:nth-child(3) { animation-delay: 0.3s; }
.stagger-animation > *:nth-child(4) { animation-delay: 0.4s; }
.stagger-animation > *:nth-child(5) { animation-delay: 0.5s; }
.stagger-animation > *:nth-child(6) { animation-delay: 0.6s; }

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

/* Performance optimizations */
.will-change-transform {
    will-change: transform;
}

.will-change-opacity {
    will-change: opacity;
}

.gpu-accelerated {
    transform: translateZ(0);
    backface-visibility: hidden;
}