.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #17303b;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 99999;
}

.loader {
    position: relative;
    width: 200px;
    height: 200px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.loader-ring {
    position: absolute;
    width: 150px;
    height: 150px;
    border: 2px solid transparent;
    border-top: 2px solid #4be1ff;
    border-radius: 50%;
    animation: rotate 2s linear infinite;
}

.loader-ring:nth-child(2) {
    width: 120px;
    height: 120px;
    border-top: 2px solid #007e83;
    animation-duration: 1.8s;
    animation-direction: reverse;
}

.loader-ring:nth-child(3) {
    width: 90px;
    height: 90px;
    border-top: 2px solid #4be1ff;
    animation-duration: 1.6s;
}

.loader-text {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 1.5rem;
    font-weight: 600;
    color: #4be1ff;
    text-transform: uppercase;
    letter-spacing: 4px;
    animation: pulse 1.5s ease-in-out infinite;
}

.loader-progress {
    position: absolute;
    bottom: -40px;
    width: 100px;
    height: 2px;
    background: rgba(75, 225, 255, 0.2);
    border-radius: 2px;
    overflow: hidden;
}

.loader-progress-bar {
    width: 100%;
    height: 100%;
    background: #4be1ff;
    transform-origin: left;
    animation: progress 2s ease-in-out infinite;
}

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

@keyframes pulse {
    0%, 100% { 
        opacity: 0.5;
        transform: scale(0.95);
    }
    50% { 
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes progress {
    0% {
        transform: scaleX(0);
    }
    50% {
        transform: scaleX(1);
    }
    100% {
        transform: scaleX(0);
        transform-origin: right;
    }
}

@media (max-width: 768px) {
    .loader {
        width: 150px;
        height: 150px;
    }
    
    .loader-ring {
        width: 120px;
        height: 120px;
    }
    
    .loader-ring:nth-child(2) {
        width: 90px;
        height: 90px;
    }
    
    .loader-ring:nth-child(3) {
        width: 60px;
        height: 60px;
    }
    
    .loader-text {
        font-size: 1.2rem;
    }
}