body {
    font-family: 'Roboto', sans-serif;
    padding-top: 50px;
    background: linear-gradient(135deg, #f0f4f8, #e0e7ff);
    transition: background 0.3s ease;
    min-height: 100vh;
}

.dark-mode {
    background: linear-gradient(135deg, #0f0c29, #302b63, #24243e);
}

.container {
    max-width: 1080px;
    background-color: #fff;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: background-color 0.3s ease;
}

.dark-mode .container {
    background-color: #1e1e1e;
    box-shadow: none;
}

h1 {
    font-size: 2rem;
    font-weight: 500;
    color: #424242;
    text-align: center;
    transition: color 0.3s ease;
}

.dark-mode h1 {
    color: #e0e0e0;
}

label {
    font-size: 1.1rem;
    color: #424242;
    transition: color 0.3s ease;
}

.dark-mode label {
    color: #e0e0e0;
}

textarea, select {
    font-size: 1rem;
    padding: 10px;
    border: 1px solid #d1d9e6;
    background-color: #fff;
    color: #333;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.dark-mode textarea, .dark-mode select {
    background-color: #2c2c2c;
    color: #e0e0e0;
    border: 1px solid #555;
}

button {
    font-size: 1.2rem;
    padding: 12px;
    background-color: #6200ea;
    border: none;
    border-radius: 5px;
    color: white;
    transition: background-color 0.3s ease;
}

button:hover {
    background-color: #3700b3;
}

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

.spinner-border {
    display: none;
    width: 1rem;
    height: 1rem;
}

.loading .spinner-border {
    display: inline-block;
}

.output-container {
    background-color: #f0f4f8;
    padding: 15px;
    border-radius: 5px;
    border: 1px solid #d1d9e6;
    margin-top: 20px;
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.dark-mode .output-container {
    background-color: #2c2c2c;
    border-color: #555;
}

.text-success {
    color: #2e7d32;
}

.text-danger {
    color: #c62828;
}

.switch-container {
    display: flex;
    justify-content: flex-end;
    margin-top: -10px;
    margin-bottom: 10px;
}

.dark-switch {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 10px;
    max-width: 50px;
}