/* Entrance Overlay Container */
.entrance-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: #000;
    z-index: 2147483647;
    /* Max possible Z-Index */
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    opacity: 1;
    transition: opacity 1s ease-out, transform 1s ease-out;
    /* Slightly longer, simpler easing */
    will-change: opacity, transform;
}

.entrance-overlay.entrance-hidden {
    opacity: 0;
    pointer-events: none;
}

/* Randomized Exit Variants */
.entrance-overlay.exit-zoom-in {
    transform: scale(1.1);
}

.entrance-overlay.exit-zoom-out {
    transform: scale(0.95);
}

.entrance-overlay.exit-slide-up {
    transform: translateY(-40px);
}

.entrance-overlay.exit-slide-down {
    transform: translateY(40px);
}

/* PERFORMANCE OPTIMIZATION: Pause all inner animations during exit */
.entrance-overlay.entrance-hidden * {
    animation-play-state: paused !important;
}

/* Background Variants (Controlled by JS) */
.entrance-overlay[data-theme="cosmic"] {
    background: radial-gradient(circle at center, #0B1026 0%, #000000 100%);
}

.entrance-overlay[data-theme="cyber"] {
    background: linear-gradient(135deg, #050511 0%, #1a1a2e 100%);
}

.entrance-overlay[data-theme="clean"] {
    background: #ffffff;
}

/* For "clean" theme, we need darker elements */
.entrance-overlay[data-theme="clean"] .entrance-content {
    filter: invert(1);
}

.entrance-overlay[data-theme="clean"] .stopreg-spinner-overlay::before {
    border-color: #eee;
    border-top-color: #1452CA;
}

/* Content Container */
.entrance-content {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
}

.entrance-logo {
    width: 120px;
    height: auto;
    margin-bottom: 24px;
    animation: entrance-float 3s ease-in-out infinite;
    filter: drop-shadow(0 0 20px rgba(20, 82, 202, 0.5));
}

.entrance-tagline {
    font-family: 'PlusJakartaSans-Regular', sans-serif;
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
    letter-spacing: 1px;
    opacity: 0;
    animation: entrance-fade-up 1s ease-out forwards 0.5s;
}

@keyframes entrance-float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-10px);
    }
}

@keyframes entrance-fade-up {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Procedural Grid (Cyber Theme Only) */
.entrance-overlay[data-theme="cyber"]::before {
    content: "";
    position: absolute;
    width: 200%;
    height: 200%;
    top: -50%;
    left: -50%;
    background-image:
        linear-gradient(rgba(20, 82, 202, 0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(20, 82, 202, 0.1) 1px, transparent 1px);
    background-size: 60px 60px;
    transform: perspective(500px) rotateX(60deg);
    animation: entrance-grid-move 20s linear infinite;
    pointer-events: none;
}

@keyframes entrance-grid-move {
    0% {
        transform: perspective(500px) rotateX(60deg) translateY(0);
    }

    100% {
        transform: perspective(500px) rotateX(60deg) translateY(60px);
    }
}

/* Cosmic Particles */
.entrance-overlay[data-theme="cosmic"]::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        radial-gradient(2px 2px at 20px 30px, #eee, rgba(0, 0, 0, 0)),
        radial-gradient(2px 2px at 40px 70px, #fff, rgba(0, 0, 0, 0)),
        radial-gradient(2px 2px at 50px 160px, #ddd, rgba(0, 0, 0, 0)),
        radial-gradient(2px 2px at 90px 40px, #fff, rgba(0, 0, 0, 0)),
        radial-gradient(2px 2px at 130px 80px, #fff, rgba(0, 0, 0, 0));
    background-repeat: repeat;
    background-size: 200px 200px;
    animation: entrance-stars 60s linear infinite;
    opacity: 0.3;
}

@keyframes entrance-stars {
    from {
        background-position: 0 0;
    }

    to {
        background-position: 0 1000px;
    }
}