/**
 * Centralized Spinner System CSS
 * Single source of truth for all spinner styles
 */

/* Container Styles */
.spinner-container {
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: opacity 0.3s ease-in-out;
    z-index: 1000;
}

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

.spinner-container.spinner-hiding {
    opacity: 0;
}

/* Overlay variant */
.spinner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    border-radius: 8px;
}

/* Content wrapper */
.spinner-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    text-align: center;
    padding: 20px;
}

/* Spinner Animation */
.spinner-animation {
    border-radius: 50%;
    border-style: solid;
    animation: spinner-spin 1s linear infinite;
}

/* Size variants */
.spinner-small .spinner-animation {
    width: 24px;
    height: 24px;
    border-width: 2px;
}

.spinner-medium .spinner-animation {
    width: 40px;
    height: 40px;
    border-width: 3px;
}

.spinner-large .spinner-animation {
    width: 56px;
    height: 56px;
    border-width: 4px;
}

/* Type variants (colors) */
.spinner-loading .spinner-animation {
    border-color: #333;
    border-top-color: #007AFF;
}

.spinner-saving .spinner-animation {
    border-color: #333;
    border-top-color: #34C759;
}

.spinner-uploading .spinner-animation {
    border-color: #333;
    border-top-color: #FF9500;
}

.spinner-processing .spinner-animation {
    border-color: #333;
    border-top-color: #AF52DE;
}

.spinner-error .spinner-animation {
    border-color: #333;
    border-top-color: #FF3B30;
}

/* Message styling */
.spinner-message {
    color: white;
    font-size: 1.1rem;
    font-weight: 500;
    margin: 0;
    line-height: 1.4;
}

/* Dark theme support */
@media (prefers-color-scheme: dark) {
    .spinner-overlay {
        background: rgba(0, 0, 0, 0.9);
    }
    
    .spinner-loading .spinner-animation {
        border-color: #666;
        border-top-color: #007AFF;
    }
    
    .spinner-saving .spinner-animation {
        border-color: #666;
        border-top-color: #34C759;
    }
    
    .spinner-uploading .spinner-animation {
        border-color: #666;
        border-top-color: #FF9500;
    }
    
    .spinner-processing .spinner-animation {
        border-color: #666;
        border-top-color: #AF52DE;
    }
}

/* Keyframe animation */
@keyframes spinner-spin {
    0% { 
        transform: rotate(0deg); 
    }
    100% { 
        transform: rotate(360deg); 
    }
}

/* Legacy compatibility for existing state containers */
.loading-state .spinner-container,
.saving-state .spinner-container,
.error-state .spinner-container {
    min-height: 300px;
}

/* Backward compatibility for old spinner markup */
.loading-spinner,
.saving-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid #333;
    border-top: 3px solid #007AFF;
    border-radius: 50%;
    animation: spinner-spin 1s linear infinite;
    margin: 0 auto;
}

.saving-spinner {
    border-top-color: #34C759;
}

/* Hide messages when spinner-only class is present */
.spinner-only .loading-text,
.spinner-only .saving-text,
.spinner-only .spinner-message {
    display: none;
}

/* Mobile optimizations */
@media (max-width: 768px) {
    .spinner-content {
        padding: 16px;
        gap: 12px;
    }
    
    .spinner-message {
        font-size: 1rem;
    }
    
    .spinner-medium .spinner-animation {
        width: 36px;
        height: 36px;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .spinner-animation {
        border-width: 4px !important;
    }
    
    .spinner-loading .spinner-animation {
        border-color: #000;
        border-top-color: #0066CC;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    .spinner-animation {
        animation: none;
        border-top-color: transparent;
        border-right-color: transparent;
        border-bottom-color: transparent;
    }
    
    .spinner-animation::after {
        content: '●';
        display: flex;
        align-items: center;
        justify-content: center;
        width: 100%;
        height: 100%;
        color: #007AFF;
        font-size: 0.7em;
        animation: spinner-pulse 2s ease-in-out infinite;
    }
}

@keyframes spinner-pulse {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 1; }
}