/* ===== ANIMATIONS & TRANSITIONS ===== */

/* Fade 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);
    }
}

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

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

@keyframes heartbeat {
    0% {
        transform: scale(1);
    }
    14% {
        transform: scale(1.3);
    }
    28% {
        transform: scale(1);
    }
    42% {
        transform: scale(1.3);
    }
    70% {
        transform: scale(1);
    }
}

/* Rotate Animations */
@keyframes rotate {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

@keyframes swing {
    20% {
        transform: rotate(15deg);
    }
    40% {
        transform: rotate(-10deg);
    }
    60% {
        transform: rotate(5deg);
    }
    80% {
        transform: rotate(-5deg);
    }
    100% {
        transform: rotate(0deg);
    }
}

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

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

/* Bounce Animations */
@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-20px);
    }
    60% {
        transform: translateY(-10px);
    }
}

@keyframes bounceIn {
    0% {
        opacity: 0;
        transform: scale(0.3);
    }
    50% {
        opacity: 1;
        transform: scale(1.05);
    }
    70% {
        transform: scale(0.9);
    }
    100% {
        transform: scale(1);
    }
}

/* Float Animation */
@keyframes float {
    0% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-10px);
    }
    100% {
        transform: translateY(0px);
    }
}

/* Shimmer Effect */
@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

/* Loading Spinner */
@keyframes spin {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

/* Typing Effect */
@keyframes typing {
    from {
        width: 0;
    }
    to {
        width: 100%;
    }
}

@keyframes blink {
    50% {
        opacity: 0;
    }
}

/* Wave Animation */
@keyframes wave {
    0% {
        transform: rotate(0deg);
    }
    10% {
        transform: rotate(14deg);
    }
    20% {
        transform: rotate(-8deg);
    }
    30% {
        transform: rotate(14deg);
    }
    40% {
        transform: rotate(-4deg);
    }
    50% {
        transform: rotate(10deg);
    }
    60% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(0deg);
    }
}

/* Glow Animation */
@keyframes glow {
    0% {
        box-shadow: 0 0 5px var(--color-accent);
    }
    50% {
        box-shadow: 0 0 20px var(--color-accent), 0 0 30px var(--color-accent);
    }
    100% {
        box-shadow: 0 0 5px var(--color-accent);
    }
}

/* ===== UTILITY CLASSES FOR ANIMATIONS ===== */

/* Fade Classes */
.fade-in {
    animation: fadeIn 0.6s ease;
}

.fade-in-up {
    animation: fadeInUp 0.6s ease;
}

.fade-in-down {
    animation: fadeInDown 0.6s ease;
}

.fade-in-left {
    animation: fadeInLeft 0.6s ease;
}

.fade-in-right {
    animation: fadeInRight 0.6s ease;
}

/* Scale Classes */
.scale-in {
    animation: scaleIn 0.6s ease;
}

.pulse {
    animation: pulse 2s infinite;
}

.heartbeat {
    animation: heartbeat 1.5s ease-in-out infinite;
}

/* Rotate Classes */
.rotate {
    animation: rotate 2s linear infinite;
}

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

/* Slide Classes */
.slide-in-left {
    animation: slideInLeft 0.6s ease;
}

.slide-in-right {
    animation: slideInRight 0.6s ease;
}

/* Bounce Classes */
.bounce {
    animation: bounce 2s infinite;
}

.bounce-in {
    animation: bounceIn 0.75s;
}

/* Float Class */
.float {
    animation: float 3s ease-in-out infinite;
}

/* Loading Spinner Class */
.spinner {
    animation: spin 1s linear infinite;
}

/* Glow Class */
.glow {
    animation: glow 2s ease-in-out infinite;
}

/* ===== HOVER ANIMATIONS ===== */

/* Grow on Hover */
.hover-grow {
    transition: transform 0.3s ease;
}

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

/* Shrink on Hover */
.hover-shrink {
    transition: transform 0.3s ease;
}

.hover-shrink:hover {
    transform: scale(0.95);
}

/* Rotate on Hover */
.hover-rotate {
    transition: transform 0.3s ease;
}

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

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

.hover-shadow:hover {
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

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

.hover-lift:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
}

/* ===== TRANSITION UTILITIES ===== */

.transition-fast {
    transition: all 0.2s ease;
}

.transition-medium {
    transition: all 0.3s ease;
}

.transition-slow {
    transition: all 0.5s ease;
}

.transition-all {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== DELAY UTILITIES ===== */

.delay-100 {
    animation-delay: 0.1s;
}

.delay-200 {
    animation-delay: 0.2s;
}

.delay-300 {
    animation-delay: 0.3s;
}

.delay-400 {
    animation-delay: 0.4s;
}

.delay-500 {
    animation-delay: 0.5s;
}

/* ===== LOADING STATES ===== */

.skeleton {
    background: linear-gradient(
        90deg,
        #f0f0f0 25%,
        #e0e0e0 50%,
        #f0f0f0 75%
    );
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

.loading {
    position: relative;
    color: transparent;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid #f3f3f3;
    border-top: 2px solid var(--color-accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* ===== SMOOTH SCROLL BEHAVIOR ===== */

html.smooth-scroll {
    scroll-behavior: smooth;
}

/* ===== PARALLAX EFFECT ===== */

.parallax {
    position: relative;
    transform-style: preserve-3d;
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.parallax:hover {
    transform: perspective(1000px) rotateX(10deg) rotateY(-10deg) scale(1.05);
}

/* ===== CUSTOM SCROLLBAR ===== */

::-webkit-scrollbar {
    width: 10px;
}

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

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

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

/* ===== SELECTION STYLES ===== */

::selection {
    background: var(--color-accent);
    color: var(--color-secondary);
}

::-moz-selection {
    background: var(--color-accent);
    color: var(--color-secondary);
}