/* Keyframe Animations */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

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

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

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

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

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

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

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

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

@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 shake {
    10%, 90% {
        transform: translate3d(-1px, 0, 0);
    }
    20%, 80% {
        transform: translate3d(2px, 0, 0);
    }
    30%, 50%, 70% {
        transform: translate3d(-4px, 0, 0);
    }
    40%, 60% {
        transform: translate3d(4px, 0, 0);
    }
}

@keyframes glow {
    from {
        box-shadow: 0 0 5px var(--primary-color);
    }
    to {
        box-shadow: 0 0 20px var(--primary-color), 0 0 30px var(--primary-color);
    }
}

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

/* Animation Classes */
.animate-fadeIn {
    animation: fadeIn 0.6s ease-out;
}

.animate-fadeInUp {
    animation: fadeInUp 0.6s ease-out;
}

.animate-fadeInDown {
    animation: fadeInDown 0.6s ease-out;
}

.animate-fadeInLeft {
    animation: fadeInLeft 0.6s ease-out;
}

.animate-fadeInRight {
    animation: fadeInRight 0.6s ease-out;
}

.animate-slideUp {
    animation: slideUp 0.4s ease-out;
}

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

.animate-bounce {
    animation: bounce 1s;
}

.animate-shake {
    animation: shake 0.82s cubic-bezier(0.36, 0.07, 0.19, 0.97) both;
}

.animate-glow {
    animation: glow 1.5s ease-in-out infinite alternate;
}

.animate-gradient {
    background: linear-gradient(-45deg, var(--primary-color), var(--secondary-color), var(--accent-color), var(--primary-color));
    background-size: 400% 400%;
    animation: gradient 3s ease infinite;
}

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

.hover-lift:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

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

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

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

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

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

.hover-glow:hover {
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.6);
}

/* Page Transition Animations */
.page-enter {
    opacity: 0;
    transform: translateY(20px);
}

.page-enter-active {
    opacity: 1;
    transform: translateY(0);
    transition: all 0.4s ease-out;
}

.page-exit {
    opacity: 1;
    transform: translateY(0);
}

.page-exit-active {
    opacity: 0;
    transform: translateY(-20px);
    transition: all 0.3s ease-in;
}

/* Staggered Animations */
.stagger-children > * {
    animation: fadeInUp 0.6s ease-out both;
}

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

/* Loading Animations */
.skeleton {
    background: linear-gradient(90deg, var(--bg-tertiary) 25%, var(--bg-secondary) 50%, var(--bg-tertiary) 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
}

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

/* Modal Animations */
.modal.active .modal-content {
    animation: modalSlideIn 0.3s ease-out;
}

@keyframes modalSlideIn {
    from {
        transform: translateY(-50px) scale(0.9);
        opacity: 0;
    }
    to {
        transform: translateY(0) scale(1);
        opacity: 1;
    }
}

/* Button Press Animation */
.btn:active {
    transform: translateY(1px) scale(0.98);
}

/* Navbar Scroll Animation */
.navbar.scrolled {
    background: rgba(10, 10, 10, 0.98);
    backdrop-filter: blur(30px);
    box-shadow: var(--shadow-md);
}

/* Card Hover Effects */
.card-hover-effect {
    position: relative;
    overflow: hidden;
}

.card-hover-effect::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    border-radius: var(--radius-lg);
    opacity: 0;
    z-index: -1;
    transition: opacity 0.3s ease;
}

.card-hover-effect:hover::before {
    opacity: 1;
}

/* Text Animations */
.typewriter {
    overflow: hidden;
    border-right: 2px solid var(--primary-color);
    white-space: nowrap;
    animation: typewriter 3s steps(40, end), blink-caret 0.75s step-end infinite;
}

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

@keyframes blink-caret {
    from, to {
        border-color: transparent;
    }
    50% {
        border-color: var(--primary-color);
    }
}

/* Progress Animations */
.progress-bar {
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    position: relative;
}

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

.progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    animation: shimmer 2s infinite;
}

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

/* Notification Animations */
.notification-enter {
    transform: translateX(100%) scale(0.8);
    opacity: 0;
}

.notification-enter-active {
    transform: translateX(0) scale(1);
    opacity: 1;
    transition: all 0.3s ease-out;
}

.notification-exit {
    transform: translateX(0) scale(1);
    opacity: 1;
}

.notification-exit-active {
    transform: translateX(100%) scale(0.8);
    opacity: 0;
    transition: all 0.3s ease-in;
}

/* Smooth Scrolling for Navigation */
html {
    scroll-behavior: smooth;
}

/* Focus Animations */
.focus-ring {
    transition: box-shadow 0.2s ease;
}

.focus-ring:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.3);
}

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