:root {
    --primary-color: #1a73e8;
    --primary-hover: #1557b0;
    --text-color: #202124;
    --subtitle-color: #5f6368;
    --bg-color: #ffffff;
    --footer-text: #70757a;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Google Sans', 'Roboto', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.container {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 20px;
    width: 100%;
    max-width: 600px;
}

.logo {
    width: 120px;
    height: 120px;
    margin-bottom: 24px;
    border-radius: 20%; /* Soft rounded corners like app icons */
}

.title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 16px;
    line-height: 1.2;
    color: var(--text-color);
}

.subtitle {
    font-size: 1.125rem;
    color: var(--subtitle-color);
    margin-bottom: 40px;
    line-height: 1.5;
    max-width: 480px;
}

.cta-button {
    display: inline-block;
    background-color: var(--primary-color);
    color: white;
    font-size: 1.125rem;
    font-weight: 500;
    padding: 12px 32px;
    border-radius: 4px;
    text-decoration: none;
    transition: background-color 0.2s ease, box-shadow 0.2s ease;
    box-shadow: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24);
}

.cta-button:hover {
    background-color: var(--primary-hover);
    box-shadow: 0 3px 6px rgba(0,0,0,0.16), 0 3px 6px rgba(0,0,0,0.23);
}

.footer {
    padding: 24px;
    font-size: 0.875rem;
    color: var(--footer-text);
    margin-top: auto;
}

@media (max-width: 600px) {
    .title {
        font-size: 2rem;
    }
    
    .subtitle {
        font-size: 1rem;
    }
    
    .logo {
        width: 96px;
        height: 96px;
    }
}