:root {
    --bg-color: #f0f0f0;
    --text-color: #333;
    --container-bg: transparent;
    --number-bg: #fff;
    --number-text: #333;
    --btn-bg: #4CAF50;
    --btn-text: #fff;
    --shadow: rgba(0, 0, 0, 0.1);
}

body.dark-mode {
    --bg-color: #1a1a1a;
    --text-color: #f0f0f0;
    --container-bg: #2d2d2d;
    --number-bg: #444;
    --number-text: #fff;
    --btn-bg: #45a049;
    --btn-text: #fff;
    --shadow: rgba(0, 0, 0, 0.5);
}

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

.container {
    text-align: center;
    padding: 40px;
    border-radius: 15px;
    background-color: var(--container-bg);
    box-shadow: 0 4px 15px var(--shadow);
}

.lotto-numbers {
    display: flex;
    justify-content: center;
    margin: 20px 0;
}

.number {
    display: inline-block;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--number-bg);
    color: var(--number-text);
    margin: 0 5px;
    line-height: 50px;
    font-size: 24px;
    font-weight: bold;
    box-shadow: 0 2px 5px var(--shadow);
    transition: background-color 0.3s, color 0.3s;
}

#generate-btn {
    padding: 10px 20px;
    font-size: 16px;
    cursor: pointer;
    border: none;
    border-radius: 5px;
    background-color: var(--btn-bg);
    color: var(--btn-text);
    transition: background-color 0.3s;
}

.contact-section {
    margin-top: 40px;
    padding-top: 20px;
}

.comments-section {
    margin-top: 40px;
    padding-top: 20px;
    text-align: left; /* Comments look better left-aligned */
}

hr {
    border: 0;
    border-top: 1px solid var(--shadow);
    margin: 20px 0;
}

#contact-form {
    display: flex;
    flex-direction: column;
    gap: 15px;
    max-width: 400px;
    margin: 0 auto;
}

.form-group input, 
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--shadow);
    border-radius: 8px;
    background-color: var(--number-bg);
    color: var(--text-color);
    font-size: 14px;
    box-sizing: border-box;
    transition: all 0.3s;
}

.form-group textarea {
    height: 100px;
    resize: none;
}

.form-group input:focus, 
.form-group textarea:focus {
    outline: none;
    border-color: var(--btn-bg);
    box-shadow: 0 0 5px var(--btn-bg);
}

.submit-btn {
    padding: 12px;
    background-color: var(--btn-bg);
    color: var(--btn-text);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 16px;
    font-weight: bold;
    transition: background-color 0.3s;
}

.submit-btn:hover {
    filter: brightness(1.1);
}

#theme-toggle {
    position: absolute;
    top: 20px;
    right: 20px;
    padding: 8px 15px;
    cursor: pointer;
    border: 1px solid var(--text-color);
    border-radius: 20px;
    background: transparent;
    color: var(--text-color);
    font-size: 14px;
    transition: all 0.3s;
}