:root {
    --background-color: #E8E8E8;
    --shadow-light: #FFFFFF;
    --shadow-dark: #BEBEBE;
    --primary-color: #000000;
    --text-muted: #A0A0A0;
}

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

body {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background-color: var(--background-color);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.header-logo {
    position: absolute;
    top: 30px;
    left: 30px;
}

.logo {
    height: 55px;
    width: auto;
    display: block;
}

.login-container {
    width: 420px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.input-field {
    width: 100%;
}

.input-field input {
    width: 100%;
    padding: 20px 25px;
    border: none;
    outline: none;
    font-size: 15px;
    font-weight: 400;
    color: var(--text-muted);
    background-color: var(--background-color);
    border-radius: 30px;
    font-style: italic;
    
    box-shadow: inset 6px 6px 12px var(--shadow-dark),
                inset -6px -6px 12px var(--shadow-light);
    
    transition: all 0.3s ease;
}

.input-field input::placeholder {
    color: var(--text-muted);
    font-style: italic;
}

.input-field input:focus {
    color: #333;
}

.google-login-btn {
    width: 50%;
    padding: 14px 0;
    margin: 10px auto 0;
    border: none;
    outline: none;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    background-color: var(--primary-color);
    color: white;
    border-radius: 25px;
    
    box-shadow: 8px 8px 16px var(--shadow-dark),
                -8px -8px 16px var(--shadow-light);
    
    transition: all 0.2s ease;
}

.google-login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 10px 10px 20px var(--shadow-dark),
                -10px -10px 20px var(--shadow-light);
}

.google-login-btn:active {
    transform: translateY(0);
    box-shadow: 4px 4px 8px var(--shadow-dark),
                -4px -4px 8px var(--shadow-light);
}

@media (max-width: 480px) {
    .login-container {
        width: 90%;
        padding: 0 20px;
    }
    
    .header-logo {
        top: 20px;
        left: 20px;
    }
    
    .logo {
        height: 35px;
    }
}