:root {
    --bg-color: #f0f2f5;
    --container-bg: #fff;
    --text-color: #333;
    --number-bg: #4CAF50;
    --button-bg: #008CBA;
    --button-hover: #005f73;
    --shadow: rgba(0, 0, 0, 0.1);
}

body.dark-mode {
    --bg-color: #18191a;
    --container-bg: #242526;
    --text-color: #e4e6eb;
    --number-bg: #2d88ff;
    --button-bg: #3a3b3c;
    --button-hover: #4e4f50;
    --shadow: rgba(0, 0, 0, 0.5);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    min-height: 100vh;
    margin: 0;
    padding: 40px 20px;
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: background-color 0.3s, color 0.3s;
    box-sizing: border-box;
}

.container {
    width: 100%;
    max-width: 600px;
    text-align: center;
    background-color: var(--container-bg);
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 10px 20px var(--shadow);
    transition: background-color 0.3s, box-shadow 0.3s;
}

h1 {
    color: var(--text-color);
    margin-bottom: 30px;
    transition: color 0.3s;
}

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

.number {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 50px;
    height: 50px;
    background-color: var(--number-bg);
    color: white;
    border-radius: 50%;
    margin: 0 10px;
    font-size: 24px;
    font-weight: bold;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease-in-out, background-color 0.3s;
}

#draw-button {
    background-color: var(--button-bg);
    color: white;
    padding: 15px 32px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 16px;
    margin: 4px 2px;
    cursor: pointer;
    border-radius: 12px;
    border: none;
    box-shadow: 0 4px 8px 0 rgba(0,0,0,0.2);
    transition: 0.3s;
}

#draw-button:hover {
    background-color: var(--button-hover);
    box-shadow: 0 8px 16px 0 rgba(0,0,0,0.2);
}

.theme-toggle {
    position: absolute;
    top: 20px;
    right: 20px;
}

#theme-button {
    background: none;
    border: 2px solid var(--text-color);
    color: var(--text-color);
    padding: 8px 16px;
    cursor: pointer;
    border-radius: 20px;
    font-weight: bold;
    transition: all 0.3s;
}

.contact-section {
    margin-top: 20px;
    text-align: left;
}

.contact-section h2 {
    color: var(--text-color);
    font-size: 1.5rem;
    margin-bottom: 20px;
    text-align: center;
}

.form-group {
    margin-bottom: 15px;
}

#contact-form input,
#contact-form textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--text-color);
    background-color: var(--container-bg);
    color: var(--text-color);
    border-radius: 8px;
    box-sizing: border-box;
    font-family: inherit;
    font-size: 1rem;
    opacity: 0.8;
    transition: 0.3s;
}

#contact-form input:focus,
#contact-form textarea:focus {
    outline: none;
    opacity: 1;
    border-color: var(--button-bg);
    box-shadow: 0 0 5px var(--button-bg);
}

#submit-button {
    width: 100%;
    background-color: #28a745;
    color: white;
    padding: 12px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.3s;
}

#submit-button:hover {
    background-color: #218838;
}

/* Adjustments for dark mode inputs */
body.dark-mode #contact-form input,
body.dark-mode #contact-form textarea {
    border-color: #444;
}