/**
 * PTNG Loading Indicators & Animations Styles
 * Provides styling for loading indicators and animations
 * Version 1.0.0
 */

/* Full page overlay */
.ptng-loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    z-index: 9999;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.ptng-loading-overlay.active {
    opacity: 1;
}

body.dark-mode .ptng-loading-overlay {
    background-color: rgba(0, 0, 0, 0.8);
}

/* Container spinner */
.container-spinner {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    z-index: 999;
    opacity: 0;
    transition: opacity 0.3s ease;
    border-radius: 4px;
}

.container-spinner.active {
    opacity: 1;
}

body.dark-mode .container-spinner {
    background-color: rgba(0, 0, 0, 0.8);
}

/* Spinner sizes */
.ptng-loading-spinner {
    display: inline-block;
    width: 40px;
    height: 40px;
    border: 4px solid rgba(0, 0, 0, 0.1);
    border-radius: 50%;
    border-top-color: var(--bs-success);
    animation: spinner 1s ease-in-out infinite;
}

.small .ptng-loading-spinner {
    width: 20px;
    height: 20px;
    border-width: 2px;
}

.medium .ptng-loading-spinner {
    width: 40px;
    height: 40px;
    border-width: 4px;
}

.large .ptng-loading-spinner {
    width: 60px;
    height: 60px;
    border-width: 6px;
}

body.dark-mode .ptng-loading-spinner {
    border-color: rgba(255, 255, 255, 0.1);
    border-top-color: var(--bs-success);
}

/* Spinner text */
.spinner-text {
    margin-top: 16px;
    font-size: 14px;
    color: #666;
}

body.dark-mode .spinner-text {
    color: #ccc;
}

/* Button loading state */
button.is-loading, 
a.is-loading {
    position: relative;
    pointer-events: none;
    color: transparent !important;
}

button.is-loading::after,
a.is-loading::after {
    content: '';
    position: absolute;
    top: calc(50% - 0.5em);
    left: calc(50% - 0.5em);
    width: 1em;
    height: 1em;
    border: 2px solid #fff;
    border-radius: 50%;
    border-top-color: transparent;
    animation: spinner 1s linear infinite;
}

/* Pulse animation for items that are loading */
@keyframes pulse {
    0% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
    100% {
        opacity: 1;
    }
}

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

/* Skeleton loading */
.skeleton-loading {
    position: relative;
    overflow: hidden;
    background-color: #e9ecef;
    border-radius: 4px;
    height: 16px;
}

.skeleton-loading::after {
    content: '';
    display: block;
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.6), transparent);
    animation: skeleton-loading 1.5s infinite;
}

body.dark-mode .skeleton-loading {
    background-color: #333;
}

body.dark-mode .skeleton-loading::after {
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
}

/* Spinner animation */
@keyframes spinner {
    to {
        transform: rotate(360deg);
    }
}

/* Skeleton loading animation */
@keyframes skeleton-loading {
    0% {
        transform: translateX(-100%);
    }
    100% {
        transform: translateX(100%);
    }
}

/* Progress bar */
.progress {
    transition: opacity 0.5s ease-out;
}

.progress.fade-out {
    opacity: 0;
}

/* Image loading placeholders */
.img-loading-placeholder {
    background-color: #e9ecef;
    position: relative;
    overflow: hidden;
}

.img-loading-placeholder::after {
    content: '';
    display: block;
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.6), transparent);
    animation: skeleton-loading 1.5s infinite;
}

body.dark-mode .img-loading-placeholder {
    background-color: #333;
}

body.dark-mode .img-loading-placeholder::after {
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
}