/**
 * Preloader Styles with Dark Mode Support
 * Displays loading spinner while page is loading
 */

/* Preloader Container */
.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease-in-out, visibility 0.5s ease-in-out;
}

.preloader.hidden {
    opacity: 0;
    visibility: hidden;
}

.preloader-inner {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

/* Spinner Animation */
.spinner {
    width: 60px;
    height: 60px;
    border: 5px solid var(--bg-secondary);
    border-top: 5px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Preloader Text */
.preloader-text {
    color: var(--text-primary);
    font-size: 16px;
    font-weight: 500;
    margin: 0;
    letter-spacing: 1px;
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

/* Pulse dot animation for loading text */
.preloader-text::after {
    content: '.';
    animation: dots 1.5s steps(4, end) infinite;
}

@keyframes dots {
    0%, 20% {
        content: '.';
    }
    40% {
        content: '..';
    }
    60% {
        content: '...';
    }
    80%, 100% {
        content: '';
    }
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .spinner {
        width: 50px;
        height: 50px;
        border: 4px solid var(--bg-secondary);
        border-top: 4px solid var(--primary-color);
    }

    .preloader-text {
        font-size: 14px;
    }
}

/* Smooth fade transition */
@media (prefers-reduced-motion: reduce) {
    .preloader {
        transition: none;
    }

    .spinner {
        animation: none;
        border-top-color: var(--primary-color);
    }

    .preloader-text {
        animation: none;
        opacity: 1;
    }

    .preloader-text::after {
        animation: none;
        content: '';
    }
}