:root {
    --bg-color: #f0f2f5;
    --container-bg: #ffffff;
    --text-color: #333333;
    --btn-bg: #007BFF;
    --btn-hover: #0056b3;
    --number-bg: #4CAF50;
    --shadow-color: rgba(0, 0, 0, 0.1);
}

body.dark-mode {
    --bg-color: #1a1a1a;
    --container-bg: #2d2d2d;
    --text-color: #f0f2f5;
    --btn-bg: #3498db;
    --btn-hover: #2980b9;
    --number-bg: #2ecc71;
    --shadow-color: rgba(0, 0, 0, 0.5);
}

body {
    font-family: 'Arial', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.container {
    background-color: var(--container-bg);
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 10px 20px var(--shadow-color);
    text-align: center;
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
    position: relative;
    width: 90%;
    max-width: 400px;
    margin: 20px auto;
}

h1 {
    color: var(--text-color);
    margin-bottom: 20px;
    font-size: 1.5rem;
}

.lotto-numbers {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 30px;
}

.number {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background-color: var(--number-bg);
    color: white;
    font-size: 20px;
    font-weight: bold;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.generate-btn {
    background-color: var(--btn-bg);
    color: white;
    border: none;
    padding: 15px 30px;
    font-size: 18px;
    border-radius: 10px;
    cursor: pointer;
    transition: background-color 0.3s ease;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    width: 100%;
    margin-bottom: 10px;
}

.generate-btn:hover {
    background-color: var(--btn-hover);
}

.inquiry-section {
    margin-top: 30px;
    padding-top: 20px;
}

.inquiry-section hr {
    border: 0;
    border-top: 1px solid var(--shadow-color);
    margin-bottom: 20px;
}

.inquiry-section h3 {
    margin-bottom: 15px;
    font-size: 1.1rem;
}

.inquiry-form {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.inquiry-form input,
.inquiry-form textarea {
    padding: 12px;
    border-radius: 8px;
    border: 1px solid var(--shadow-color);
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: inherit;
    font-size: 14px;
    transition: border-color 0.3s ease;
}

.inquiry-form input:focus,
.inquiry-form textarea:focus {
    outline: none;
    border-color: var(--btn-bg);
}

.inquiry-form textarea {
    height: 80px;
    resize: vertical;
}

.submit-btn {
    background-color: var(--btn-bg);
    color: white;
    border: none;
    padding: 12px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: bold;
    transition: background-color 0.3s ease;
}

.submit-btn:hover {
    background-color: var(--btn-hover);
}

.theme-toggle {
    position: absolute;
    top: 10px;
    right: 10px;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-color);
    transition: transform 0.3s ease;
}

.theme-toggle:hover {
    transform: scale(1.1);
}

@media (max-width: 480px) {
    .container {
        padding: 20px;
    }
    .number {
        width: 40px;
        height: 40px;
        font-size: 18px;
    }
}