:root {
    --background-color: #1A1A1A;
    --card-color: #2C2C2C;
    --primary-color: #4CAF50;
    --text-color: #FFFFFF;
    --shadow-color: rgba(0, 0, 0, 0.5);
    --glow-color: rgba(76, 175, 80, 0.7);
    --font-family: 'Noto Sans KR', sans-serif;
    --bg-texture-opacity: 0.4;
}

.light-mode {
    --background-color: #F5F5F5;
    --card-color: #FFFFFF;
    --primary-color: #2E7D32;
    --text-color: #333333;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --glow-color: rgba(46, 125, 50, 0.4);
    --bg-texture-opacity: 0.1;
}

body {
    margin: 0;
    padding: 0;
    padding-top: 60px; /* Space for fixed nav */
    font-family: var(--font-family);
    background-color: var(--background-color);
    color: var(--text-color);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    transition: background-color 0.3s ease, color 0.3s ease;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='4' height='4' viewBox='0 0 4 4'%3E%3Cpath fill='%23333' fill-opacity='var(--bg-texture-opacity)' d='M1 3h1v1H1V3zm2-2h1v1H3V1z'%3E%3C/path%3E%3C/svg%3E");
}

/* Navigation */
nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: var(--card-color);
    box-shadow: 0 2px 10px var(--shadow-color);
    z-index: 1000;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 2rem;
    box-sizing: border-box;
    transition: background-color 0.3s ease;
}

.nav-logo {
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--primary-color);
    text-decoration: none;
}

.nav-links {
    display: flex;
    gap: 1.5rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-size: 0.9rem;
    font-weight: 400;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: var(--primary-color);
}

.container {
    text-align: center;
    padding: 2rem;
    flex-grow: 1;
}

/* Text Content Pages */
.content-page {
    max-width: 800px;
    margin: 0 auto;
    text-align: left;
    padding: 3rem 1rem;
    line-height: 1.8;
}

.content-page h1 {
    color: var(--primary-color);
    font-size: 2.5rem;
    margin-bottom: 2rem;
}

.content-page h2 {
    font-size: 1.8rem;
    margin-top: 2rem;
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 0.5rem;
}

.content-page p {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
}

/* Footer */
footer {
    background-color: var(--card-color);
    padding: 3rem 2rem;
    margin-top: 5rem;
    text-align: center;
    box-shadow: 0 -2px 10px var(--shadow-color);
    transition: background-color 0.3s ease;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 2rem;
    list-style: none;
    padding: 0;
}

.footer-links a {
    text-decoration: none;
    color: var(--text-color);
    font-size: 0.9rem;
    opacity: 0.8;
}

.footer-links a:hover {
    opacity: 1;
    color: var(--primary-color);
}

.copyright {
    font-size: 0.8rem;
    opacity: 0.6;
}

header {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 2rem;
}

header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin: 0;
    text-shadow: 0 0 10px var(--shadow-color);
    transition: text-shadow 0.3s ease;
}

#theme-toggle {
    margin-top: 1rem;
    background: var(--card-color);
    color: var(--text-color);
    border: 1px solid var(--primary-color);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    box-shadow: 0 2px 5px var(--shadow-color);
}

#theme-toggle:hover {
    background: var(--primary-color);
    color: white;
}

.lotto-card {
    background-color: var(--card-color);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px var(--shadow-color);
    width: 90%;
    max-width: 400px;
    margin: 0 auto; /* Center it */
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

#comments-section {
    margin-top: 3rem;
    padding: 2rem;
    background-color: var(--card-color);
    border-radius: 15px;
    box-shadow: 0 5px 20px var(--shadow-color);
    width: 90%;
    max-width: 800px; /* Comments can be wider */
    margin-left: auto;
    margin-right: auto;
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

#contact-section {
    margin-top: 3rem;
    padding: 2rem;
    background-color: var(--card-color);
    border-radius: 15px;
    box-shadow: 0 5px 20px var(--shadow-color);
    width: 90%;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
    text-align: left;
}

#contact-section h2 {
    text-align: center;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.form-group input, 
.form-group textarea {
    width: 100%;
    padding: 0.8rem;
    border-radius: 8px;
    border: 1px solid var(--shadow-color);
    background-color: var(--background-color);
    color: var(--text-color);
    font-family: var(--font-family);
    box-sizing: border-box;
    transition: all 0.3s ease;
}

.form-group input:focus, 
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 5px var(--glow-color);
}

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

#submit-btn {
    width: 100%;
    padding: 1rem;
    background-color: var(--primary-color);
    color: #FFFFFF;
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 0 10px var(--glow-color);
}

#submit-btn:hover {
    filter: brightness(1.1);
    transform: translateY(-2px);
    box-shadow: 0 0 20px var(--glow-color);
}

#disqus_thread {
    min-height: 200px;
}

.numbers-display {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    min-height: 80px;
    margin-bottom: 2rem;
}

.number-circle {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--primary-color);
    color: #FFFFFF;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
    transition: all 0.3s ease;
    animation: ball-bounce 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275) both;
}

/* Lotto Ball Colors by Range */
.ball-range-1 { background: radial-gradient(circle at 30% 30%, #fbc400, #f6ab00); color: #333; } /* 1-10: Yellow */
.ball-range-2 { background: radial-gradient(circle at 30% 30%, #69c8f2, #2da9e1); }             /* 11-20: Blue */
.ball-range-3 { background: radial-gradient(circle at 30% 30%, #ff7272, #e74c3c); }             /* 21-30: Red */
.ball-range-4 { background: radial-gradient(circle at 30% 30%, #aaaaaa, #888888); }             /* 31-40: Grey */
.ball-range-5 { background: radial-gradient(circle at 30% 30%, #b0d840, #8eb62d); }             /* 41-45: Green */

@keyframes ball-bounce {
    0% {
        opacity: 0;
        transform: translateY(20px) scale(0.3);
    }
    70% {
        transform: translateY(-5px) scale(1.1);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* Blog Section */
.blog-section {
    margin-top: 5rem;
    width: 100%;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
    padding: 2rem 0;
}

.blog-card {
    background-color: var(--card-color);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 15px var(--shadow-color);
    transition: all 0.3s ease;
    text-align: left;
    display: flex;
    flex-direction: column;
}

.blog-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px var(--shadow-color);
}

.blog-card-content {
    padding: 1.5rem;
    flex-grow: 1;
}

.blog-card-category {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--primary-color);
    text-transform: uppercase;
    margin-bottom: 0.5rem;
    display: block;
}

.blog-card-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.4;
    color: var(--text-color);
}

.blog-card-excerpt {
    font-size: 0.95rem;
    opacity: 0.8;
    margin-bottom: 1.5rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.blog-card-link {
    text-decoration: none;
    color: var(--primary-color);
    font-weight: 700;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.blog-card-link:hover {
    text-decoration: underline;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.view-all-btn {
    text-decoration: none;
    background-color: var(--primary-color);
    color: white;
    padding: 0.6rem 1.2rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 700;
    transition: all 0.3s ease;
}

.view-all-btn:hover {
    filter: brightness(1.1);
    transform: scale(1.05);
}

#generate-btn {
    background-color: var(--primary-color);
    color: #FFFFFF; /* Keep button text white for visibility */
    border: none;
    padding: 1rem 2rem;
    font-size: 1.2rem;
    font-weight: 700;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 0 15px var(--glow-color);
}

#generate-btn:hover {
    filter: brightness(1.1);
    box-shadow: 0 0 25px var(--glow-color);
    transform: translateY(-2px);
}

@keyframes appear {
    from {
        opacity: 0;
        transform: scale(0.5);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@media (max-width: 480px) {
    header h1 {
        font-size: 2rem;
    }

    .lotto-card {
        padding: 1.5rem;
    }

    .number-circle {
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
    }

    #generate-btn {
        padding: 0.8rem 1.5rem;
        font-size: 1rem;
    }
}