/* --- Reset & Global Styling --- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

/* --- Moving White-Gray-Black Flowing Gradient Background --- */
body {
    font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: linear-gradient(-45deg, #ffffff, #cbd5e1, #64748b, #1e293b, #0f172a, #475569, #e2e8f0, #ffffff);
    background-size: 400% 400%;
    animation: gradientShift 14s ease infinite;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
    position: relative;
}

@keyframes gradientShift {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

/* --- Gray Gradient Shimmer Overlay --- */
.shimmer-container {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    pointer-events: none;
    z-index: 1;
}

.shimmer-stripe {
    position: absolute;
    top: -50%;
    height: 200%;
    transform: rotate(25deg);
    pointer-events: none;
}

.stripe-1 {
    width: 200px;
    background: linear-gradient(
        90deg, 
        transparent 0%, 
        rgba(255, 255, 255, 0.25) 35%, 
        rgba(255, 255, 255, 0.6) 50%, 
        rgba(255, 255, 255, 0.25) 65%, 
        transparent 100%
    );
    animation: shineSweep 7s infinite cubic-bezier(0.4, 0, 0.2, 1);
}

.stripe-2 {
    width: 100px;
    background: linear-gradient(
        90deg, 
        transparent 0%, 
        rgba(255, 255, 255, 0.2) 30%, 
        rgba(255, 255, 255, 0.5) 50%, 
        rgba(255, 255, 255, 0.2) 70%, 
        transparent 100%
    );
    animation: shineSweep 7s infinite cubic-bezier(0.4, 0, 0.2, 1);
    animation-delay: 0.4s;
}

@keyframes shineSweep {
    0% {
        left: -40%;
        opacity: 0;
    }
    15% {
        opacity: 1;
    }
    60% {
        left: 140%;
        opacity: 1;
    }
    100% {
        left: 140%;
        opacity: 0;
    }
}

/* --- Centered Title --- */
.main-wrapper {
    position: relative;
    z-index: 10;
    text-align: center;
    padding: 24px;
}

.main-title {
    font-size: 3.5rem;
    font-weight: 800;
    color: #ffffff;
    letter-spacing: -1px;
    line-height: 1.2;
    text-shadow: 
        0 4px 20px rgba(0, 0, 0, 0.35),
        0 1px 3px rgba(0, 0, 0, 0.5);
    filter: drop-shadow(0 2px 8px rgba(0,0,0,0.2));
}

@media (max-width: 600px) {
    .main-title {
        font-size: 2.2rem;
    }
}