@import url('https://fonts.googleapis.com/css2?family=Nanum+Pen+Script&display=swap');

:root {
    --bg-color: #f0f0f0;
    --text-color: #333;
    --container-bg: #fff;
    --ball-bg: #4CAF50;
    --ball-text: #fff;
    --btn-bg: #FFC107;
    --btn-hover: #FFA000;
    --shadow: rgba(0, 0, 0, 0.1);
    --ball-shadow: rgba(0, 0, 0, 0.2);
}

body.dark-mode {
    --bg-color: #1a1a1a;
    --text-color: #f0f0f0;
    --container-bg: #2d2d2d;
    --shadow: rgba(0, 0, 0, 0.5);
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: 'Nanum Pen Script', cursive;
    margin: 0;
    transition: background-color 0.3s, color 0.3s;
    display: block;
    line-height: 1.6;
}

header {
    background-color: var(--container-bg);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 10px var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

nav a {
    text-decoration: none;
    color: var(--text-color);
    font-size: 1.4rem;
    transition: color 0.3s;
}

nav a:hover {
    color: var(--ball-bg);
}

.container {
    text-align: center;
    max-width: 800px;
    margin: 2rem auto;
    padding: 0 1rem;
}

h1 {
    font-size: 4rem;
    color: var(--text-color);
    margin-bottom: 2rem;
}

.subtitle {
    font-size: 1.8rem;
    margin-top: -1.5rem;
    margin-bottom: 2rem;
    opacity: 0.8;
}

.lotto-machine {
    background-color: var(--container-bg);
    padding: 3rem 2rem;
    border-radius: 15px;
    box-shadow: 0 10px 20px var(--shadow);
    transition: background-color 0.3s, box-shadow 0.3s;
    margin-bottom: 3rem;
}

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

.number-ball {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background-color: var(--ball-bg);
    color: var(--ball-text);
    font-size: 2rem;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0.5rem;
    box-shadow: 0 4px 8px var(--ball-shadow);
    transition: transform 0.3s ease;
}

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

#generate-btn {
    background-color: var(--btn-bg);
    color: #333;
    font-family: 'Nanum Pen Script', cursive;
    font-size: 1.8rem;
    padding: 0.8rem 3rem;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    box-shadow: 0 4px 8px var(--ball-shadow);
    transition: all 0.3s;
}

#generate-btn:hover {
    background-color: var(--btn-hover);
    transform: translateY(-3px);
    box-shadow: 0 6px 12px var(--ball-shadow);
}

.content-section {
    margin-top: 5rem;
    text-align: left;
    padding-bottom: 2rem;
}

.content-section h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 2.5rem;
}

.info-card {
    background-color: var(--container-bg);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 15px var(--shadow);
    margin-bottom: 2rem;
}

.info-card h3 {
    margin-top: 0;
    font-size: 1.8rem;
    color: var(--ball-bg);
}

.info-card p, .info-card li {
    font-size: 1.3rem;
}

.info-card ul {
    list-style: none;
    padding: 0;
}

.info-card li {
    margin-bottom: 0.8rem;
    padding-left: 2rem;
    position: relative;
}

.info-card li::before {
    content: '🍀';
    position: absolute;
    left: 0;
}

.prob-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
    font-size: 1.2rem;
}

.prob-table th, .prob-table td {
    padding: 1rem;
    border-bottom: 1px solid var(--shadow);
    text-align: center;
}

.prob-table th {
    background-color: var(--bg-color);
    color: var(--ball-bg);
}

.partnership-section {
    margin-top: 5rem;
    background-color: var(--container-bg);
    padding: 3rem 2rem;
    border-radius: 15px;
    box-shadow: 0 10px 20px var(--shadow);
    transition: background-color 0.3s, box-shadow 0.3s;
}

.partnership-section h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.partnership-section p {
    font-size: 1.3rem;
    margin-bottom: 2rem;
}

#partnership-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    max-width: 600px;
    margin: 0 auto;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 1px solid var(--text-color);
    border-radius: 10px;
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: 'Nanum Pen Script', cursive;
    font-size: 1.3rem;
    box-sizing: border-box;
    transition: all 0.3s;
}

.form-group textarea {
    height: 150px;
    resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--ball-bg);
    box-shadow: 0 0 8px var(--ball-bg);
}

#submit-btn {
    background-color: var(--ball-bg);
    color: var(--ball-text);
    font-family: 'Nanum Pen Script', cursive;
    font-size: 1.8rem;
    padding: 1rem;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    box-shadow: 0 4px 8px var(--ball-shadow);
    transition: all 0.3s;
}

#submit-btn:hover {
    filter: brightness(1.1);
    transform: translateY(-3px);
}

footer {
    background-color: var(--container-bg);
    padding: 3rem 2rem;
    margin-top: 6rem;
    text-align: center;
    box-shadow: 0 -2px 10px var(--shadow);
}

footer p {
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

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

.footer-links a {
    text-decoration: none;
    color: var(--text-color);
    font-size: 1.3rem;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: var(--ball-bg);
}

#theme-btn {
    background: none;
    border: 2px solid var(--text-color);
    color: var(--text-color);
    padding: 8px 20px;
    border-radius: 25px;
    cursor: pointer;
    font-family: 'Nanum Pen Script', cursive;
    font-size: 1.3rem;
    transition: all 0.3s;
}

#theme-btn:hover {
    background-color: var(--text-color);
    color: var(--bg-color);
}

@media (max-width: 600px) {
    header {
        flex-direction: column;
        gap: 1rem;
    }
    nav ul {
        gap: 1rem;
    }
    h1 {
        font-size: 3rem;
    }
}