/* Loading States & Animations */

/* Loading Spinner */
.loading-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
    gap: var(--spacing-md);
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--bg-secondary);
    border-top: 4px solid var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.loading-small .loading-spinner {
    width: 24px;
    height: 24px;
    border-width: 3px;
}

.loading-large .loading-spinner {
    width: 60px;
    height: 60px;
    border-width: 5px;
}

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

.loading-message {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    text-align: center;
}

/* Skeleton Screens */
.skeleton-container {
    display: grid;
    gap: var(--spacing-md);
}

.skeleton-card {
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    animation: skeleton-pulse 1.5s ease-in-out infinite;
}

.skeleton-image {
    width: 100%;
    height: 200px;
    background: var(--bg-secondary);
}

.skeleton-content {
    padding: var(--spacing-md);
}

.skeleton-title {
    width: 70%;
    height: 20px;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-sm);
}

.skeleton-text {
    width: 100%;
    height: 14px;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-xs);
}

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

.skeleton-list-item {
    height: 50px;
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    animation: skeleton-pulse 1.5s ease-in-out infinite;
}

.skeleton-grid-item {
    aspect-ratio: 16/9;
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    animation: skeleton-pulse 1.5s ease-in-out infinite;
}

@keyframes skeleton-pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.6;
    }
}

/* Progress Bar */
.progress-container {
    width: 100%;
    padding: var(--spacing-md);
}

.progress-message {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-sm);
    text-align: center;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--bg-secondary);
    border-radius: var(--radius-full);
    overflow: hidden;
    position: relative;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--primary-dark));
    border-radius: var(--radius-full);
    transition: width 0.3s ease;
    position: relative;
    overflow: hidden;
}

.progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.3),
        transparent
    );
    animation: progress-shine 2s infinite;
}

@keyframes progress-shine {
    0% {
        transform: translateX(-100%);
    }
    100% {
        transform: translateX(100%);
    }
}

.progress-percentage {
    text-align: center;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-xs);
    font-weight: 600;
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 10000;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    max-width: 400px;
}

.toast {
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    animation: toast-slide-in 0.3s ease-out;
    position: relative;
}

.toast.success {
    border-left: 4px solid #10b981;
}

.toast.error {
    border-left: 4px solid #ef4444;
}

.toast.warning {
    border-left: 4px solid #f59e0b;
}

.toast.info {
    border-left: 4px solid var(--primary);
}

.toast-icon {
    font-size: var(--font-size-xl);
    flex-shrink: 0;
}

.toast-content {
    flex: 1;
}

.toast-title {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.toast-message {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.toast-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 4px;
    font-size: var(--font-size-lg);
    transition: color var(--transition-base);
}

.toast-close:hover {
    color: var(--text-primary);
}

@keyframes toast-slide-in {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
    .loading-container {
        padding: var(--spacing-lg);
    }
    
    .toast-container {
        top: 10px;
        right: 10px;
        left: 10px;
        max-width: none;
    }
    
    .progress-container {
        padding: var(--spacing-sm);
    }
}