:root {
    --bg-color: #f7f9fc;
    --text-color: #2c3e50;
    --container-bg: #ffffff;
    --btn-bg: #4caf50;
    --btn-text: #ffffff;
    --input-border: #d1d8e0;
    --input-bg: #fdfdfd;
    --bar-bg: #ecf0f1;
    --nav-bg: #ffffff;
    --accent-color: #3498db;
}

body.dark-mode {
    --bg-color: #121212;
    --text-color: #e0e0e0;
    --container-bg: #1e1e1e;
    --btn-bg: #43a047;
    --btn-text: #ffffff;
    --input-border: #333333;
    --input-bg: #2d2d2d;
    --bar-bg: #333333;
    --nav-bg: #1e1e1e;
}

body {
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: all 0.3s ease;
    margin: 0;
    padding-top: 80px;
    line-height: 1.7;
}

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 70px;
    background-color: var(--nav-bg);
    display: flex;
    justify-content: space-around;
    align-items: center;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    z-index: 1000;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    margin: 0 12px;
    font-weight: 600;
    font-size: 0.9rem;
    transition: color 0.3s;
}

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

.main-wrapper {
    display: flex;
    flex-direction: column;
    gap: 40px;
    width: 95%;
    max-width: 800px; /* Increased for better reading width */
    margin: 0 auto;
    padding-bottom: 60px;
}

.container {
    background-color: var(--container-bg);
    padding: 40px;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    text-align: center;
}

.hero-text h1 {
    font-size: 2.2rem;
    margin-bottom: 15px;
    line-height: 1.2;
}

.hero-text p {
    font-size: 1.1rem;
    opacity: 0.85;
}

.article-content {
    text-align: left;
    margin-top: 40px;
    padding-top: 30px;
    border-top: 1px solid var(--input-border);
}

.article-content h3 {
    font-size: 1.4rem;
    margin-bottom: 15px;
    color: var(--btn-bg);
}

.article-content p {
    margin-bottom: 20px;
    font-size: 1rem;
    opacity: 0.9;
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-top: 30px;
}

.blog-card {
    background-color: var(--bg-color);
    padding: 25px;
    border-radius: 12px;
    text-align: left;
    transition: transform 0.3s;
    border: 1px solid var(--input-border);
}

.blog-card:hover {
    transform: translateY(-5px);
}

.blog-card h4 {
    margin-top: 0;
    margin-bottom: 10px;
    color: var(--btn-bg);
}

.blog-card p {
    font-size: 0.9rem;
    margin: 0;
    opacity: 0.8;
}

#generator-btn {
    width: 100%;
    max-width: 300px;
    padding: 16px;
    font-size: 1.1rem;
    font-weight: bold;
    cursor: pointer;
    border: none;
    border-radius: 10px;
    background-color: var(--btn-bg);
    color: var(--btn-text);
    margin-bottom: 30px;
}

.lotto-ball {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.3rem;
    font-weight: bold;
    color: white;
    box-shadow: 0 4px 10px rgba(0,0,0,0.2);
    animation: popIn 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

@keyframes popIn {
    0% { transform: scale(0); opacity: 0; }
    100% { transform: scale(1); opacity: 1; }
}

/* Animal Test Result Bar */
.result-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.result-label { font-weight: bold; width: 80px; text-align: left; }
.result-bar-bg { flex-grow: 1; height: 16px; background: var(--bar-bg); margin: 0 15px; border-radius: 8px; overflow: hidden; }
.result-bar-fill { height: 100%; background: var(--btn-bg); transition: width 0.6s ease; }
.result-percent { width: 50px; text-align: right; font-weight: bold; font-size: 0.9rem; }

/* Form Elements */
.form-group { text-align: left; margin-bottom: 20px; }
.form-group label { display: block; margin-bottom: 8px; font-weight: 600; font-size: 0.95rem; }
.form-group input, .form-group textarea {
    width: 100%; padding: 14px; border: 1px solid var(--input-border); border-radius: 8px;
    background: var(--input-bg); color: var(--text-color); font-family: inherit; font-size: 1rem;
}

.submit-btn {
    width: 100%; padding: 16px; background: var(--btn-bg); color: var(--btn-text);
    border: none; border-radius: 10px; font-weight: bold; font-size: 1.1rem; cursor: pointer;
}

.footer { padding: 50px 20px; }
.footer-links a { margin: 0 15px; text-decoration: none; color: var(--text-color); font-weight: 600; }

@media (max-width: 600px) {
    .navbar { flex-direction: column; height: auto; padding: 10px; }
    .nav-links { margin-bottom: 10px; }
    .main-wrapper { padding-top: 120px; }
    .hero-text h1 { font-size: 1.8rem; }
}