/* Loading States & Animations */

/* Global Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9998;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.loading-overlay.active {
    opacity: 1;
    visibility: visible;
}

.loading-content {
    text-align: center;
    color: white;
    max-width: 300px;
}

/* Custom Spinner */
.loading-spinner {
    position: relative;
    width: 60px;
    height: 60px;
    margin: 0 auto 1.5rem;
}

.spinner-ring {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 3px solid transparent;
    border-top: 3px solid #ffffff;
    border-radius: 50%;
    animation: spinnerRotate 1.2s linear infinite;
}

.spinner-ring:nth-child(2) {
    width: 80%;
    height: 80%;
    top: 10%;
    left: 10%;
    border-top-color: rgba(255, 255, 255, 0.7);
    animation-duration: 1.5s;
    animation-direction: reverse;
}

.spinner-ring:nth-child(3) {
    width: 60%;
    height: 60%;
    top: 20%;
    left: 20%;
    border-top-color: rgba(255, 255, 255, 0.4);
    animation-duration: 2s;
}

@keyframes spinnerRotate {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading-text {
    font-size: 1.1rem;
    font-weight: 500;
    margin-bottom: 1rem;
    color: white;
}

.loading-progress {
    width: 200px;
    height: 4px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 2px;
    overflow: hidden;
    margin: 0 auto;
    display: none;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, #007bff, #0056b3);
    border-radius: 2px;
    transition: width 0.3s ease;
    position: relative;
}

.progress-bar::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: progressGlow 2s ease-in-out infinite;
}

@keyframes progressGlow {
    0%, 100% { transform: translateX(-100%); }
    50% { transform: translateX(100%); }
}

/* Skeleton Screens */
.skeleton-container {
    animation: skeletonFadeIn 0.3s ease;
}

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

.skeleton-card,
.skeleton-list,
.skeleton-table {
    background: var(--card-bg);
    border-radius: 8px;
    padding: 1rem;
    margin-bottom: 1rem;
    border: 1px solid var(--border-color);
}

.skeleton-header {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
}

.skeleton-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--bg-secondary);
    margin-right: 1rem;
    animation: skeletonPulse 1.5s ease-in-out infinite;
}

.skeleton-lines {
    flex: 1;
}

.skeleton-line {
    height: 12px;
    background: var(--bg-secondary);
    border-radius: 6px;
    margin-bottom: 0.5rem;
    animation: skeletonPulse 1.5s ease-in-out infinite;
}

.skeleton-line-title {
    height: 16px;
    width: 80%;
}

.skeleton-line-subtitle {
    height: 12px;
    width: 60%;
}

.skeleton-line-short {
    width: 40%;
}

.skeleton-content .skeleton-line:nth-child(1) {
    width: 100%;
    animation-delay: 0.1s;
}

.skeleton-content .skeleton-line:nth-child(2) {
    width: 85%;
    animation-delay: 0.2s;
}

.skeleton-content .skeleton-line:nth-child(3) {
    width: 70%;
    animation-delay: 0.3s;
}

@keyframes skeletonPulse {
    0%, 100% {
        opacity: 1;
        background: var(--bg-secondary);
    }
    50% {
        opacity: 0.6;
        background: var(--bg-tertiary);
    }
}

/* Skeleton List */
.skeleton-list-item {
    display: flex;
    align-items: center;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
}

.skeleton-list-item:last-child {
    border-bottom: none;
}

.skeleton-list-item .skeleton-avatar {
    width: 32px;
    height: 32px;
}

/* Skeleton Table */
.skeleton-table-header,
.skeleton-table-row {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 1rem;
    margin-bottom: 0.75rem;
}

.skeleton-table-header .skeleton-line {
    height: 14px;
    background: var(--bg-tertiary);
}

.skeleton-table-row .skeleton-line {
    height: 12px;
}

/* Inline Spinners */
.inline-spinner {
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.spinner-sm .spinner-border {
    width: 1rem;
    height: 1rem;
}

.spinner-md .spinner-border {
    width: 1.5rem;
    height: 1.5rem;
}

.spinner-lg .spinner-border {
    width: 2rem;
    height: 2rem;
}

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

.btn.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 1rem;
    height: 1rem;
    border: 2px solid transparent;
    border-top: 2px solid currentColor;
    border-radius: 50%;
    animation: buttonSpinner 0.8s linear infinite;
}

@keyframes buttonSpinner {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}

/* Page Load Animations */
body {
    opacity: 0;
    transition: opacity 0.5s ease;
}

body.page-loaded {
    opacity: 1;
}

/* Tool Transition Animations */
#app-content {
    transition: all 0.3s ease;
}

#app-content.transitioning {
    opacity: 0;
    transform: translateY(10px);
}

#app-content.transition-in {
    opacity: 1;
    transform: translateY(0);
    animation: slideInUp 0.3s ease;
}

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

/* Scroll Animations */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

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

/* Card hover animations */
.card {
    transition: all 0.3s ease;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--shadow-lg);
}

/* Progress Bar Wrapper */
.progress-wrapper {
    margin: 0.5rem 0;
}

.progress {
    background-color: var(--bg-secondary);
    border-radius: 4px;
    overflow: hidden;
}

.progress-bar {
    background: linear-gradient(90deg, var(--button-primary), #0056b3);
    transition: width 0.3s ease;
    position: relative;
}

.progress-bar-animated {
    background: linear-gradient(90deg, var(--button-primary), #0056b3);
    background-size: 200% 100%;
    animation: progressFlow 2s linear infinite;
}

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

.progress-bar-striped {
    background-image: linear-gradient(45deg, rgba(255, 255, 255, 0.15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, 0.15) 50%, rgba(255, 255, 255, 0.15) 75%, transparent 75%, transparent);
    background-size: 1rem 1rem;
}

.progress-percentage {
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

/* Toast Improvements */
.toast-container .toast {
    backdrop-filter: blur(10px);
    border-radius: 8px;
    box-shadow: 0 4px 12px var(--shadow);
}

.toast.show {
    animation: toastSlideIn 0.3s ease;
}

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

/* Loading pulse for images */
.image-loading {
    background: linear-gradient(90deg, var(--bg-secondary) 25%, var(--bg-tertiary) 50%, var(--bg-secondary) 75%);
    background-size: 200% 100%;
    animation: imagePulse 1.5s ease-in-out infinite;
}

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

/* Micro-interactions */
.btn, .form-control, .card, .nav-link {
    transition: all 0.2s ease;
}

.btn:hover:not(:disabled) {
    transform: translateY(-1px);
}

.btn:active:not(:disabled) {
    transform: translateY(0);
}

/* Form loading states */
.form-control.loading {
    background-image: linear-gradient(90deg, transparent, rgba(var(--bs-primary-rgb), 0.1), transparent);
    background-size: 200% 100%;
    animation: formInputLoading 1.5s ease-in-out infinite;
}

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

/* Dark mode adjustments */
[data-theme="dark"] .loading-overlay {
    background: rgba(0, 0, 0, 0.85);
}

[data-theme="dark"] .spinner-ring {
    border-top-color: #ffffff;
}

[data-theme="dark"] .progress-bar {
    background: linear-gradient(90deg, #0d6efd, #0a58ca);
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    .loading-overlay,
    #app-content,
    .card,
    .btn,
    .animate-on-scroll,
    .skeleton-line,
    .spinner-ring,
    .progress-bar {
        transition: none !important;
        animation: none !important;
    }
    
    .card:hover {
        transform: none;
    }
    
    .btn:hover:not(:disabled) {
        transform: none;
    }
}

/* Mobile optimizations */
@media (max-width: 768px) {
    .loading-content {
        max-width: 250px;
        padding: 1rem;
    }
    
    .loading-spinner {
        width: 40px;
        height: 40px;
    }
    
    .loading-text {
        font-size: 1rem;
    }
    
    .loading-progress {
        width: 150px;
    }
    
    .skeleton-card,
    .skeleton-list,
    .skeleton-table {
        padding: 0.75rem;
    }
    
    .skeleton-avatar {
        width: 32px;
        height: 32px;
    }
}

/* High performance mode */
.performance-mode * {
    transition: none !important;
    animation: none !important;
    transform: none !important;
    box-shadow: none !important;
}

/* Focus management during loading */
.loading-overlay.active ~ * {
    pointer-events: none;
}

.loading-overlay.active {
    pointer-events: all;
}

/* Accessibility improvements */
.loading-spinner[aria-hidden="false"] {
    position: relative;
}

.loading-spinner::after {
    content: attr(aria-label);
    position: absolute;
    left: -9999px;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

/* Print styles */
@media print {
    .loading-overlay,
    .skeleton-container,
    .toast-container {
        display: none !important;
    }
}