:root {
    --bg-color: #f4f7f6;
    --container-bg: white;
    --text-color: #333;
    --shadow: rgba(0,0,0,0.1);
    --ball-shadow: rgba(0,0,0,0.2);
}

[data-theme="dark"] {
    --bg-color: #1a1a1a;
    --container-bg: #2d2d2d;
    --text-color: #f4f7f6;
    --shadow: rgba(0,0,0,0.5);
    --ball-shadow: rgba(255,255,255,0.1);
}

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;
    padding: 2rem 0;
    flex-direction: column;
    gap: 2rem;
    transition: background-color 0.3s, color 0.3s;
}

.container {
    background: var(--container-bg);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 10px 25px var(--shadow);
    text-align: center;
    position: relative;
    transition: background-color 0.3s, box-shadow 0.3s;
    width: 100%;
    max-width: 500px;
    box-sizing: border-box;
}

h1, h2 {
    color: var(--text-color);
    margin-bottom: 2rem;
}

.theme-toggle {
    position: absolute;
    top: 10px;
    right: 10px;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 5px;
    border-radius: 50%;
    transition: background-color 0.2s;
}

.theme-toggle:hover {
    background-color: rgba(0,0,0,0.05);
}

[data-theme="dark"] .theme-toggle:hover {
    background-color: rgba(255,255,255,0.1);
}

.numbers-container {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 2rem;
    min-height: 60px;
}

.ball {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    color: white;
    font-weight: bold;
    font-size: 1.2rem;
    box-shadow: 0 4px 6px var(--ball-shadow);
}

.generate-btn {
    background-color: #4CAF50;
    color: white;
    border: none;
    padding: 12px 24px;
    font-size: 1rem;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s;
}

.generate-btn:hover {
    background-color: #45a049;
}

/* Contact Form Styles */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
    text-align: left;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-size: 0.9rem;
    font-weight: bold;
    color: var(--text-color);
}

.form-group input, 
.form-group textarea {
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 5px;
    background-color: var(--container-bg);
    color: var(--text-color);
    font-family: inherit;
    transition: border-color 0.3s;
}

[data-theme="dark"] .form-group input, 
[data-theme="dark"] .form-group textarea {
    border-color: #444;
}

.form-group input:focus, 
.form-group textarea:focus {
    outline: none;
    border-color: #4CAF50;
}

.form-group textarea {
    min-height: 100px;
    resize: vertical;
}

.submit-btn {
    background-color: #2196F3;
    color: white;
    border: none;
    padding: 12px;
    font-size: 1rem;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s;
}

.submit-btn:hover {
    background-color: #1976D2;
}