.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--app-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 1;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.preloader.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.preloader-content {
    --glass-bg-dark-strong: rgba(22, 22, 26, 0.78);
    --glass-border: rgba(255, 255, 255, 0.14);
    --glass-highlight: rgba(255, 255, 255, 0.28);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 28px;
    padding: 44px 56px;
    border-radius: 24px;
    background: var(--glass-bg-dark-strong);
    backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
    -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow), inset 0 1px 0 var(--glass-highlight);
    animation: preloaderCardIn 0.6s ease-out both;
}

@keyframes preloaderCardIn {
    from {
        opacity: 0;
        transform: translateY(12px) scale(0.98);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.preloader-logo {
    width: auto;
    height: 64px;
    max-width: 100%;
    object-fit: contain;
    filter: drop-shadow(0 6px 20px rgba(10, 132, 255, 0.35));
}

.preloader-text {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: 1px;
    animation: fadeInUp 0.8s ease-out;
    margin: 0;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.preloader-progress {
    width: 220px;
    height: 4px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 999px;
    overflow: hidden;
    margin: 0;
}

.preloader-progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-indigo));
    box-shadow: 0 0 12px rgba(10, 132, 255, 0.6);
    width: 0%;
    border-radius: 999px;
    transition: width 0.3s ease;
}

@media (max-width: 480px) {
    .preloader-content {
        gap: 22px;
        padding: 32px 36px;
        border-radius: 20px;
    }

    .preloader-logo {
        height: 48px;
    }

    .preloader-progress {
        width: 168px;
    }
}