:root {
    --primary-color: lightblue;
    --secondary-color: lightgrey;
    --accent-color: #4fc3f7;
    --background-color: #2A2E32;
    --text-color: white;
    --success-color: #4caf50;
    --container-bg: #40464C;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
}

.container {
    width: 90%;
    max-width: 600px;
    background-color: var(--container-bg);
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    padding: 2rem;
    margin: 2rem 0;
    text-align: center;
}

h1 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

button {
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 5px;
    padding: 0.8rem 1.5rem;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.3s ease;
    width: 100%;
}

button:hover {
    background-color: var(--secondary-color);
}

button:disabled {
    background-color: #cccccc;
    cursor: not-allowed;
}

.form-group {
    margin-bottom: 1.5rem;
}

label {
    display: block;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--secondary-color);
    text-align: left;
}

input {
    width: 100%;
    padding: 0.8rem;
    border: 2px solid var(--secondary-color);
    border-radius: 5px;
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--text-color);
    font-size: 1rem;
    box-sizing: border-box;
}

input:focus {
    border-color: var(--accent-color);
    outline: none;
}

.error {
    color: #f44336;
    text-align: center;
    margin-top: 1rem;
    font-size: 0.9rem;
}