/**
 * Page Transitions and Content Loaders
 * Provides smooth transitions between pages and loading animations
 */

/* Page Transition Overlay */
.page-transition-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(255, 255, 255, 0.95);
    z-index: 99999;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

/* Fallback for when overlay is added to body */
body > .page-transition-overlay {
    position: fixed;
    z-index: 99999;
}

.page-transition-overlay.visible {
    opacity: 1;
    pointer-events: all;
}

/* Overlay animations */
.page-transition-overlay.animate-in {
    animation: fadeInOverlay 0.3s ease forwards;
}

.page-transition-overlay.animate-out {
    animation: fadeOutOverlay 0.3s ease forwards;
}

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

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

/* Progress bar at top of page */
.page-transition-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    width: 0%;
    background: linear-gradient(to right, #3b82f6, #60a5fa);
    z-index: 100000;
    transition: width 0.1s ease;
}

.page-transition-progress.active {
    animation: progressAnimation 0.5s ease forwards;
}

@keyframes progressAnimation {
    0% { width: 0%; }
    20% { width: 20%; }
    50% { width: 50%; }
    80% { width: 80%; }
    100% { width: 100%; }
}

/* Transition Spinner */
.transition-spinner {
    width: 50px;
    height: 50px;
    animation: pulseSpinner 1s infinite alternate;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

@keyframes pulseSpinner {
    from { transform: translate(-50%, -50%) scale(0.95); opacity: 0.8; }
    to { transform: translate(-50%, -50%) scale(1.05); opacity: 1; }
}

.transition-spinner .spinner {
    animation: rotate 2s linear infinite;
    transform-origin: center center;
    width: 100%;
    height: 100%;
}

.transition-spinner .path {
    stroke: #3b82f6;
    stroke-dasharray: 89, 200;
    stroke-dashoffset: 0;
    stroke-linecap: round;
    animation: dash 1.5s ease-in-out infinite;
}

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

@keyframes dash {
    0% {
        stroke-dasharray: 1, 200;
        stroke-dashoffset: 0;
    }
    50% {
        stroke-dasharray: 89, 200;
        stroke-dashoffset: -35px;
    }
    100% {
        stroke-dasharray: 89, 200;
        stroke-dashoffset: -124px;
    }
}

/* Content Loaders */
.content-loader {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10;
    transition: opacity 0.3s ease;
}

.content-loader.fade-out {
    opacity: 0;
}

/* Content Loader Spinner */
.content-loader-spinner {
    display: flex;
    justify-content: center;
    align-items: center;
}

.spinner-bounce {
    width: 18px;
    height: 18px;
    background-color: #3b82f6;
    border-radius: 100%;
    display: inline-block;
    animation: sk-bouncedelay 1.4s infinite ease-in-out both;
}

.spinner-bounce:before,
.spinner-bounce:after {
    content: '';
    display: inline-block;
    width: 18px;
    height: 18px;
    background-color: #3b82f6;
    border-radius: 100%;
    margin: 0 6px;
    animation: sk-bouncedelay 1.4s infinite ease-in-out both;
}

.spinner-bounce:before {
    animation-delay: -0.32s;
}

.spinner-bounce:after {
    animation-delay: -0.16s;
}

@keyframes sk-bouncedelay {
    0%, 80%, 100% { 
        transform: scale(0);
    } 
    40% { 
        transform: scale(1.0);
    }
}

/* Skeleton Loading Placeholders */
.skeleton-loader {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
    border-radius: 4px;
    height: 16px;
    margin-bottom: 8px;
}

.skeleton-loader.title {
    height: 24px;
    width: 70%;
}

.skeleton-loader.text {
    height: 16px;
    width: 100%;
}

.skeleton-loader.text.short {
    width: 60%;
}

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

.skeleton-loader.avatar {
    height: 40px;
    width: 40px;
    border-radius: 50%;
}

.skeleton-loader.button {
    height: 36px;
    width: 120px;
}

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

/* Error Message */
.error-message {
    padding: 16px;
    background-color: #fee2e2;
    border: 1px solid #fecaca;
    border-radius: 4px;
    color: #b91c1c;
    text-align: center;
}

.retry-button {
    margin-top: 8px;
    padding: 4px 12px;
    background-color: #ef4444;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.2s;
}

.retry-button:hover {
    background-color: #dc2626;
}

/* Page Animation */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-in {
    animation: fadeIn 0.5s ease-out forwards;
}

/* Staggered animations for lists */
.staggered-item {
    opacity: 0;
    transform: translateY(10px);
}

.staggered-item.visible {
    animation: fadeIn 0.5s ease-out forwards;
}

/* Data loading placeholders */
[data-loading="true"] {
    position: relative;
    min-height: 100px;
}

[data-loading="true"]::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.8);
    z-index: 1;
}

[data-loading="true"]::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 30px;
    height: 30px;
    margin: -15px 0 0 -15px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #3b82f6;
    border-radius: 50%;
    z-index: 2;
    animation: spin 1s linear infinite;
}

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