.preloader {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    background: var(--color-bg, #262a2c); 
    transition: opacity var(--transition-very-slow, 1s) ease, 
                visibility var(--transition-very-slow, 1s) ease;
}

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

.enter-btn {
    width: 180px;
    height: 180px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    font-size: 18px;
    letter-spacing: 4px;
    color: var(--color-primary);
    opacity: 0;
    transform: scale(0.5) rotate(45deg);
    transition: transform 2s var(--ease), opacity 1.5s var(--ease2), visibility 0.3s ease-out;
    visibility: visible;
}

.enter-btn.ready {
    opacity: 1;
    transform: scale(1) rotate(0deg);
}

.enter-btn::after {
    content: '';
    position: absolute;
    inset: 0;
    border: 1px solid var(--color-primary);
    border-radius: 5%;
    transition: transform 0.4s var(--ease2), border-radius 0.4s var(--ease2);
}

.enter-btn:hover::after {
    border-radius: 0;
    transform: scale(1.5);
}

.enter-btn span {
    opacity: 0;
    transition: opacity 1.5s var(--ease2), letter-spacing 0.4s var(--ease2), text-shadow 0.4s var(--ease2);
}

.enter-btn:hover span {
    letter-spacing: 6px;
    text-shadow: 0 0 12px rgba(232, 182, 120, 0.6), 0 0 24px rgba(232, 182, 120, 0.3);
}

.enter-btn.ready span {
    opacity: 1;
    
    transition: opacity 1.5s var(--ease2) 0.5s, letter-spacing 0.4s var(--ease2) 0s, text-shadow 0.4s var(--ease2) 0s;
}


.checking-access {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1001;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.34s ease, visibility 0.34s ease;
}

.checking-access.active {
    opacity: 1;
    visibility: visible;
}

.checking-access.fade-out {
    opacity: 0;
    visibility: hidden;
}

.checking-content {
    text-align: center;
    font-family: var(--font-main);
}

.checking-text {
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    letter-spacing: 0.3em;
    color: var(--color-primary);
    margin-bottom: 20px;
    text-shadow: 
        0 0 10px rgba(232, 182, 120, 0.5),
        0 0 20px rgba(232, 182, 120, 0.3),
        0 0 30px rgba(232, 182, 120, 0.1);
    animation: checking-pulse 1.13s ease-in-out infinite;
    position: relative;
}

@keyframes checking-pulse {
    0%, 100% {
        opacity: 1;
        text-shadow: 
            0 0 10px rgba(232, 182, 120, 0.5),
            0 0 20px rgba(232, 182, 120, 0.3),
            0 0 30px rgba(232, 182, 120, 0.1);
    }
    50% {
        opacity: 0.85;
        text-shadow: 
            0 0 15px rgba(232, 182, 120, 0.7),
            0 0 30px rgba(232, 182, 120, 0.5),
            0 0 45px rgba(232, 182, 120, 0.3);
    }
}

.checking-dots {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 40px;
    height: 30px;
}

.checking-dots .dot {
    font-size: 2rem;
    color: var(--color-primary);
    opacity: 0;
    animation: dot-blink 0.79s ease-in-out infinite;
}

.checking-dots .dot:nth-child(1) {
    animation-delay: 0s;
}

.checking-dots .dot:nth-child(2) {
    animation-delay: 0.2s;
}

.checking-dots .dot:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes dot-blink {
    0%, 100% {
        opacity: 0;
        transform: scale(0.8);
    }
    50% {
        opacity: 1;
        transform: scale(1.2);
    }
}

.checking-progress {
    width: 300px;
    max-width: 80%;
    height: 2px;
    background: rgba(232, 182, 120, 0.1);
    border: 1px solid rgba(232, 182, 120, 0.2);
    position: relative;
    overflow: hidden;
    margin: 0 auto;
}

.progress-bar {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: 0;
    background: linear-gradient(90deg, 
        transparent,
        var(--color-primary),
        var(--color-primary),
        transparent
    );
    box-shadow: 
        0 0 10px rgba(232, 182, 120, 0.6),
        0 0 20px rgba(232, 182, 120, 0.4);
    transition: width 3.5s cubic-bezier(0.4, 0, 0.2, 1);
    animation: progress-glow 1.5s ease-in-out infinite;
}

@keyframes progress-glow {
    0%, 100% {
        box-shadow: 
            0 0 10px rgba(232, 182, 120, 0.6),
            0 0 20px rgba(232, 182, 120, 0.4);
    }
    50% {
        box-shadow: 
            0 0 15px rgba(232, 182, 120, 0.8),
            0 0 30px rgba(232, 182, 120, 0.6),
            0 0 45px rgba(232, 182, 120, 0.4);
    }
}


#rootkit-background {
    opacity: 0;
    transition: opacity 2s ease-in-out;
    
    will-change: contents;
    transform: translateZ(0);
    backface-visibility: hidden;
    image-rendering: optimizeSpeed;
    image-rendering: -moz-crisp-edges;
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
    
    contain: layout style paint;
    
    -webkit-transform: translateZ(0);
    -webkit-perspective: 1000;
    perspective: 1000;
}

#rootkit-background.glitch-active {
    animation: glitch-fade-in 2.5s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

@keyframes glitch-fade-in {
    0% {
        opacity: 0;
        filter: brightness(0.3) contrast(1.5);
    }
    5% {
        opacity: 0.1;
        filter: brightness(0.4) contrast(1.4) hue-rotate(2deg);
        transform: translateX(-1px);
    }
    10% {
        opacity: 0.2;
        filter: brightness(0.5) contrast(1.3) hue-rotate(-1deg);
        transform: translateX(1px);
    }
    15% {
        opacity: 0.3;
        filter: brightness(0.6) contrast(1.2);
        transform: translateX(0);
    }
    20% {
        opacity: 0.4;
        filter: brightness(0.7) contrast(1.15);
    }
    30% {
        opacity: 0.5;
        filter: brightness(0.8) contrast(1.1);
    }
    40% {
        opacity: 0.6;
        filter: brightness(0.85) contrast(1.05);
    }
    50% {
        opacity: 0.7;
        filter: brightness(0.9) contrast(1.02);
    }
    60% {
        opacity: 0.75;
        filter: brightness(0.95) contrast(1.01);
    }
    70% {
        opacity: 0.8;
        filter: brightness(0.98) contrast(1);
    }
    80% {
        opacity: 0.9;
        filter: brightness(1) contrast(1);
    }
    90% {
        opacity: 0.95;
        filter: brightness(1) contrast(1);
    }
    100% {
        opacity: 1;
        filter: brightness(1) contrast(1);
        transform: translateX(0);
    }
}