:root {
    --bg-color: #f8f9fa;
    --container-bg: #ffffff;
    --text-color: #212529;
    --secondary-text: #6c757d;
    --number-bg: #e9ecef;
    --number-text: #212529;
    --btn-bg: #007bff;
    --btn-text: #ffffff;
    --input-bg: #ffffff;
    --input-border: #ced4da;
    --accent-color: #007bff;
}

body.dark-mode {
    --bg-color: #121212;
    --container-bg: #1e1e1e;
    --text-color: #e9ecef;
    --secondary-text: #adb5bd;
    --number-bg: #2d2d2d;
    --number-text: #f8f9fa;
    --btn-bg: #0056b3;
    --input-bg: #2d2d2d;
    --input-border: #444444;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    padding: 0;
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: background-color 0.3s, color 0.3s;
    line-height: 1.6;
}

header {
    width: 100%;
    padding: 20px 0;
    text-align: center;
    background-color: var(--container-bg);
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

main {
    max-width: 800px;
    width: 90%;
    padding: 40px 0;
}

.hero-section {
    text-align: center;
    background-color: var(--container-bg);
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    margin-bottom: 40px;
}

h1 { margin-top: 0; font-size: 2.5rem; }
h2 { margin-top: 40px; border-bottom: 2px solid var(--accent-color); padding-bottom: 10px; }

.numbers-container {
    display: flex;
    gap: 15px;
    margin: 30px 0;
    justify-content: center;
    flex-wrap: wrap;
}

.number {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background-color: var(--number-bg);
    color: var(--number-text);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 26px;
    font-weight: bold;
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.1);
    transition: transform 0.2s;
}

.number:hover { transform: scale(1.1); }

#generate-btn {
    padding: 15px 40px;
    font-size: 1.2rem;
    cursor: pointer;
    border: none;
    background-color: var(--btn-bg);
    color: var(--btn-text);
    border-radius: 30px;
    font-weight: bold;
    transition: background-color 0.3s, transform 0.2s;
}

#generate-btn:hover { background-color: var(--accent-color); transform: translateY(-2px); }

.content-section {
    background-color: var(--container-bg);
    padding: 30px;
    border-radius: 15px;
    margin-bottom: 30px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.form-container {
    background-color: var(--container-bg);
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    margin-top: 40px;
}

.form-group { margin-bottom: 20px; }
.form-group label { display: block; margin-bottom: 8px; font-weight: 600; }
.form-group input, .form-group textarea {
    width: 100%; padding: 12px; border: 1px solid var(--input-border); border-radius: 8px;
    background-color: var(--input-bg); color: var(--text-color); font-size: 1rem;
}

.submit-btn {
    width: 100%; padding: 15px; background-color: var(--btn-bg); color: var(--btn-text);
    border: none; border-radius: 8px; font-size: 1.1rem; font-weight: bold; cursor: pointer;
}

#theme-toggle {
    position: fixed; top: 20px; right: 20px; padding: 12px; cursor: pointer;
    border-radius: 50%; border: none; background-color: var(--container-bg);
    color: var(--text-color); box-shadow: 0 4px 8px rgba(0,0,0,0.1); font-size: 20px; z-index: 1000;
}

footer {
    width: 100%; padding: 40px 0; background-color: var(--container-bg);
    text-align: center; margin-top: 60px; border-top: 1px solid var(--input-border);
}

.footer-links { margin-bottom: 20px; }
.footer-links a { color: var(--accent-color); text-decoration: none; margin: 0 15px; font-weight: 600; }
.footer-links a:hover { text-decoration: underline; }

#disqus_thread {
    margin-top: 40px; padding: 30px; background-color: var(--container-bg); border-radius: 15px;
}

.legal-content { font-size: 0.9rem; color: var(--secondary-text); text-align: left; }