/* ========================================
   Loading Animations & Preloader
   ======================================== */

/* Page Loader */
.page-loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.page-loader.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader-content {
    text-align: center;
    color: white;
}

/* Spinner Animation */
.spinner {
    width: 60px;
    height: 60px;
    margin: 0 auto 20px;
    position: relative;
}

.spinner-ring {
    width: 100%;
    height: 100%;
    border: 4px solid rgba(255, 255, 255, 0.2);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Dots Loader */
.dots-loader {
    display: inline-flex;
    gap: 8px;
}

.dots-loader span {
    width: 12px;
    height: 12px;
    background: white;
    border-radius: 50%;
    animation: bounce 1.4s infinite ease-in-out both;
}

.dots-loader span:nth-child(1) {
    animation-delay: -0.32s;
}

.dots-loader span:nth-child(2) {
    animation-delay: -0.16s;
}

@keyframes bounce {
    0%, 80%, 100% {
        transform: scale(0);
        opacity: 0.5;
    }
    40% {
        transform: scale(1);
        opacity: 1;
    }
}

/* Skeleton Loading */
.skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
    border-radius: 8px;
}

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

.skeleton-text {
    height: 16px;
    margin-bottom: 8px;
}

.skeleton-title {
    height: 24px;
    width: 60%;
    margin-bottom: 12px;
}

.skeleton-image {
    height: 200px;
    width: 100%;
}

/* Button Loading State */
.btn-loading {
    position: relative;
    pointer-events: none;
    color: transparent !important;
}

.btn-loading::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    top: 50%;
    left: 50%;
    margin-left: -10px;
    margin-top: -10px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* Progress Bar */
.progress-bar-animated {
    background: linear-gradient(90deg, 
        #667eea 0%, 
        #764ba2 25%, 
        #667eea 50%, 
        #764ba2 75%, 
        #667eea 100%
    );
    background-size: 200% 100%;
    animation: progressBar 2s linear infinite;
}

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

/* Shimmer Effect */
.shimmer {
    position: relative;
    overflow: hidden;
}

.shimmer::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.4),
        transparent
    );
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    100% {
        left: 100%;
    }
}

/* Pulse Loading */
.pulse-loader {
    width: 60px;
    height: 60px;
    margin: 0 auto;
    position: relative;
}

.pulse-loader::before,
.pulse-loader::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: #667eea;
    opacity: 0.6;
    animation: pulse 2s infinite;
}

.pulse-loader::after {
    animation-delay: 1s;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(0);
        opacity: 0.6;
    }
    50% {
        transform: scale(1);
        opacity: 0;
    }
}

/* Content Loading Overlay */
.content-loading {
    position: relative;
}

.content-loading::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.8);
    z-index: 10;
    backdrop-filter: blur(2px);
}

.content-loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 40px;
    height: 40px;
    margin: -20px 0 0 -20px;
    border: 4px solid #667eea;
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    z-index: 11;
}

/* Image Loading State */
img[data-src] {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
}

/* Fade In Animations */
.fade-in {
    animation: fadeIn 0.5s ease;
}

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

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

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

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

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

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

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

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

/* Scale In Animation */
.scale-in {
    animation: scaleIn 0.5s ease;
}

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

/* Bounce In Animation */
.bounce-in {
    animation: bounceIn 0.8s ease;
}

@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);
    }
}

/* Slide Animations */
.slide-in-bottom {
    animation: slideInBottom 0.5s ease;
}

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

/* Rotate In Animation */
.rotate-in {
    animation: rotateIn 0.6s ease;
}

@keyframes rotateIn {
    from {
        opacity: 0;
        transform: rotate(-180deg);
    }
    to {
        opacity: 1;
        transform: rotate(0);
    }
}