/* Modern dimming overlay with blur effect */
.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.4), rgba(30, 60, 120, 0.3));
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 10000;
    display: none;
    opacity: 0;
    transition: opacity 0.3s ease-in-out;
}

    .overlay.show {
        opacity: 1;
    }

    /* Modern centered spinner container */
    .overlay .spinner-container {
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 20px;
    }

/* Modern spinner design */
.modern-spinner {
    width: 60px;
    height: 60px;
    border: 4px solid transparent;
    border-top: 4px solid #3b82f6;
    border-right: 4px solid #8b5cf6;
    border-radius: 50%;
    animation: modernSpin 1.2s cubic-bezier(0.68, -0.55, 0.265, 1.55) infinite;
    position: relative;
}

    .modern-spinner::before {
        content: '';
        position: absolute;
        top: -4px;
        left: -4px;
        right: -4px;
        bottom: -4px;
        border: 4px solid transparent;
        border-top: 4px solid rgba(59, 130, 246, 0.3);
        border-radius: 50%;
        animation: modernSpinReverse 2s linear infinite;
    }

    .modern-spinner::after {
        content: '';
        position: absolute;
        top: 50%;
        left: 50%;
        width: 8px;
        height: 8px;
        background: linear-gradient(45deg, #3b82f6, #8b5cf6);
        border-radius: 50%;
        transform: translate(-50%, -50%);
        animation: pulse 1.5s ease-in-out infinite;
    }

/* Loading text with modern typography */
.loading-text {
    color: #ffffff;
    font-size: 18px;
    font-weight: 500;
    letter-spacing: 1px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    animation: fadeInOut 2s ease-in-out infinite;
}

/* Loading dots animation */
.loading-dots::after {
    content: '';
    animation: dots 2s steps(4, end) infinite;
}

@keyframes dots {
    0%, 20% {
        content: '';
    }

    40% {
        content: '.';
    }

    60% {
        content: '..';
    }

    80%, 100% {
        content: '...';
    }
}

/* Keyframe animations */
@keyframes modernSpin {
    0% {
        transform: rotate(0deg) scale(1);
    }

    50% {
        transform: rotate(180deg) scale(1.1);
    }

    100% {
        transform: rotate(360deg) scale(1);
    }
}

@keyframes modernSpinReverse {
    0% {
        transform: rotate(0deg);
    }

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

@keyframes pulse {
    0%, 100% {
        transform: translate(-50%, -50%) scale(1);
        opacity: 1;
    }

    50% {
        transform: translate(-50%, -50%) scale(1.5);
        opacity: 0.7;
    }
}

@keyframes fadeInOut {
    0%, 100% {
        opacity: 0.7;
    }

    50% {
        opacity: 1;
    }
}

/* Responsive design */
@media (max-width: 768px) {
    .modern-spinner {
        width: 50px;
        height: 50px;
        border-width: 3px;
    }

        .modern-spinner::before {
            border-width: 3px;
            top: -3px;
            left: -3px;
            right: -3px;
            bottom: -3px;
        }

    .loading-text {
        font-size: 16px;
    }
}