:root {
    --background-gradient: linear-gradient(to right top, #d16ba5, #c777b9, #ba83ca, #aa8fd8, #9a9ae1, #8aa7ec, #79b3f4, #69bff8, #52cffe, #41dfff, #46eefa, #5ffbf1);
    --container-bg: white;
    --text-color: #333;
    --button-bg: #4CAF50;
    --button-hover-bg: #45a049;
    --button-shadow: 0 0 10px rgba(76, 175, 80, 0.7);
    --button-hover-shadow: 0 0 20px rgba(76, 175, 80, 1);
}

body {
    font-family: 'Arial', sans-serif;
    background-color: #f0f2f5;
    color: var(--text-color);
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    background-image: var(--background-gradient);
    transition: background-color 0.3s, color 0.3s;
}

body.dark-mode {
    --background-gradient: linear-gradient(to right top, #232526, #414345);
    --container-bg: #444;
    --text-color: #f1f1f1;
    --button-bg: #555;
    --button-hover-bg: #666;
    --button-shadow: 0 0 10px rgba(255, 255, 255, 0.2);
    --button-hover-shadow: 0 0 20px rgba(255, 255, 255, 0.4);
}

.container {
    background-color: var(--container-bg);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 10px 20px rgba(0,0,0,0.1), 0 6px 6px rgba(0,0,0,0.15);
    text-align: center;
    position: relative;
}

#theme-toggle-btn {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background-color: var(--button-bg);
    color: white;
    border: none;
    padding: 8px 12px;
    border-radius: 5px;
    cursor: pointer;
}

h1 {
    color: var(--text-color);
    margin-bottom: 1.5rem;
}

.lotto-numbers {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 2rem;
}

.lotto-ball {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.5rem;
    font-weight: bold;
    color: white;
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

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

#generate-btn:hover {
    background-color: var(--button-hover-bg);
    box-shadow: var(--button-hover-shadow);
}

h2 {
    color: var(--text-color);
    margin-top: 2rem;
    margin-bottom: 1.5rem;
}

#partnership-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    text-align: left;
}

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

.form-group label {
    margin-bottom: 0.5rem;
    font-weight: bold;
    color: var(--text-color);
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group textarea {
    padding: 0.8rem;
    border: 1px solid #ccc;
    border-radius: 8px;
    font-size: 1rem;
    background-color: var(--container-bg);
    color: var(--text-color);
    transition: border-color 0.3s, background-color 0.3s;
}

.form-group input[type="text"]:focus,
.form-group input[type="email"]:focus,
.form-group textarea:focus {
    border-color: var(--button-bg);
    outline: none;
    box-shadow: 0 0 5px rgba(76, 175, 80, 0.5);
}

#partnership-form button[type="submit"] {
    background-color: var(--button-bg);
    color: white;
    border: none;
    padding: 15px 32px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 16px;
    margin-top: 1rem;
    cursor: pointer;
    border-radius: 8px;
    transition: background-color 0.3s, box-shadow 0.3s;
    box-shadow: var(--button-shadow);
}

#partnership-form button[type="submit"]:hover {
    background-color: var(--button-hover-bg);
    box-shadow: var(--button-hover-shadow);
}