body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background-color: #121212;
    color: #e0e0e0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
}

#auth-container, #welcome-container {
    background-color: #1e1e1e;
    padding: 2rem 3rem;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
    width: 100%;
    max-width: 400px;
    text-align: center;
}

h1 {
    margin-bottom: 1.5rem;
}

.input-group {
    margin-bottom: 1rem;
}

input {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid #444;
    background-color: #2c2c2c;
    color: #e0e0e0;
    border-radius: 4px;
    box-sizing: border-box; /* Important */
}

input::placeholder {
    color: #888;
}

button {
    width: 100%;
    padding: 0.8rem;
    border: none;
    background-color: #007bff;
    color: white;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: bold;
    transition: background-color 0.2s;
}

button:hover {
    background-color: #0056b3;
}

#switch-text {
    margin-top: 1.5rem;
    font-size: 0.9rem;
}

#switch-link {
    color: #007bff;
    cursor: pointer;
    text-decoration: underline;
}

#message-area {
    margin-top: 1rem;
    min-height: 20px;
}

.message.error {
    color: #ff4d4d;
}

.message.success {
    color: #4caf50;
}

.hidden {
    display: none;
}