:root {
    --bg: #f0f2f5;
    --container-bg: #ffffff;
    --text: #333333;
    --shadow: rgba(0, 0, 0, 0.1);
    --toggle-bg: #e2e8f0;
    --toggle-color: #333;
    --input-border: #ccc;
}

[data-theme="dark"] {
    --bg: #1a1a2e;
    --container-bg: #16213e;
    --text: #e0e0e0;
    --shadow: rgba(0, 0, 0, 0.4);
    --toggle-bg: #2d3748;
    --toggle-color: #e0e0e0;
    --input-border: #4a5568;
}

body {
    font-family: 'Arial', sans-serif;
    background-color: var(--bg);
    color: var(--text);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    padding: 60px 20px 40px;
    box-sizing: border-box;
    transition: background-color 0.3s, color 0.3s;
}

#theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: none;
    background-color: var(--toggle-bg);
    color: var(--toggle-color);
    font-size: 20px;
    cursor: pointer;
    box-shadow: 0 2px 6px var(--shadow);
    transition: background-color 0.3s, transform 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.container {
    text-align: center;
    background-color: var(--container-bg);
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 4px 8px var(--shadow);
    transition: background-color 0.3s, box-shadow 0.3s;
    width: 100%;
    max-width: 520px;
    box-sizing: border-box;
}

h1 {
    margin-bottom: 30px;
}

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

.lotto-ball {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 20px;
    font-weight: bold;
    color: white;
}

#generate-btn {
    padding: 15px 30px;
    font-size: 18px;
    color: white;
    background-color: #007bff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s;
}

#generate-btn:hover {
    background-color: #0056b3;
}

/* 제휴 문의 폼 */
.form-section {
    max-width: 520px;
    margin: 40px auto;
    background-color: var(--container-bg);
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 4px 8px var(--shadow);
    transition: background-color 0.3s, box-shadow 0.3s;
}

.form-section h2 {
    text-align: center;
    margin-bottom: 28px;
    font-size: 22px;
}

.form-group {
    display: flex;
    flex-direction: column;
    margin-bottom: 18px;
}

.form-group label {
    font-size: 14px;
    font-weight: bold;
    margin-bottom: 6px;
    color: var(--text);
}

.form-group input,
.form-group textarea {
    padding: 10px 14px;
    border: 1px solid var(--input-border);
    border-radius: 6px;
    font-size: 15px;
    background-color: var(--bg);
    color: var(--text);
    transition: background-color 0.3s, color 0.3s, border-color 0.3s;
    outline: none;
    resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: #007bff;
}

.submit-btn {
    width: 100%;
    padding: 14px;
    font-size: 16px;
    color: white;
    background-color: #007bff;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.3s;
    margin-top: 6px;
}

.submit-btn:hover {
    background-color: #0056b3;
}

.form-success {
    text-align: center;
    color: #28a745;
    font-size: 15px;
    margin-top: 16px;
}

/* 디스커스 댓글 */
.disqus-section {
    width: 100%;
    max-width: 760px;
    margin: 40px auto;
    background-color: var(--container-bg);
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 4px 8px var(--shadow);
    box-sizing: border-box;
    transition: background-color 0.3s, box-shadow 0.3s;
}