body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background-color: #222;
    color: white;
    padding: 20px;
    box-sizing: border-box;
}

.content-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    max-width: 800px;
    width: 100%;
}

.logo-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 20px;
}

.kotex-logo {
    max-width: 300px;
    margin-bottom: 5px;
}

.tagline {
    font-size: 1.8rem;
    margin: 0;
    text-align: center;
}

.highlight {
    color: #eb3f80;
}

.main-heading {
    font-size: 2.5rem;
    font-weight: bold;
    text-align: center;
    margin: 40px 0;
    line-height: 1.2;
    text-transform: uppercase;
}

.buttons-container {
    display: flex;
    flex-direction: column;
    gap: 30px;
    width: 100%;
    max-width: 500px;
    padding: 20px;
}

.survey-button {
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 25px;
    text-decoration: none;
    transition: transform 0.3s ease;
    cursor: pointer;
    height: 120px;
    width: 100%;
}

.women-button {
    background-color: #eb3f80;
}

.men-button {
    background-color: #29a7d1;
}

.button-text {
    color: white;
    font-size: 3.5rem;
    font-weight: bold;
    text-transform: uppercase;
}

.survey-button:hover {
    transform: scale(1.05);
}

/* Loading Overlay Styles */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
}

.loading-overlay.active {
    opacity: 1;
    visibility: visible;
}

.spinner {
    width: 60px;
    height: 60px;
    border: 8px solid #333;
    border-top: 8px solid #eb3f80;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Media Queries */
@media (max-width: 768px) {
    .main-heading {
        font-size: 2rem;
    }
    
    .tagline {
        font-size: 1.5rem;
    }
    
    .button-text {
        font-size: 3rem;
    }
    
    .kotex-logo {
        max-width: 250px;
    }
}

@media (max-width: 480px) {
    .main-heading {
        font-size: 1.5rem;
    }
    
    .tagline {
        font-size: 1.2rem;
    }
    
    .button-text {
        font-size: 2.5rem;
    }
    
    .kotex-logo {
        max-width: 200px;
    }
    
    .survey-button {
        height: 100px;
    }
    
    body {
        padding: 10px;
    }
}