:root {
    --primary-green: #556b2f;
    --dark-green: #2e4034;
    --light-blue-bg: #f0f8ff;
    --text-dark: #333;
    --border-color: #e0e0e0;
    --white-bg: #fff;
}
body {
    font-family: 'Montserrat', sans-serif;
    background-color: var(--light-blue-bg);
    color: var(--text-dark);
    margin: 0;
    padding: 0;
}
.admin-header {
    background-color: var(--white-bg);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    padding: 10px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.admin-header .logo-link img { 
    height: 60px; 
}
.admin-header .back-link { 
    color: var(--primary-green); 
    text-decoration: none; 
    font-weight: 600; 
    font-size: 1.1rem; 
}
.hub-container { 
    max-width: 1200px; 
    margin: 40px auto; 
    padding: 0 20px; 
}
.hub-header { 
    text-align: center; 
    margin-bottom: 4rem; 
}
.hub-header h1 { 
    font-family: 'Merriweather', serif; 
    font-size: 3rem; 
    color: var(--dark-green); 
    margin: 0; 
}
.hub-header p { 
    font-size: 1.2rem; 
    color: #666; 
}
.tool-section {
    margin-bottom: 3.5rem;
}
.tool-section h2 {
    font-family: 'Merriweather', serif;
    font-size: 2rem;
    color: var(--dark-green);
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 0.5rem;
    margin-bottom: 1.5rem;
}
.tool-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}
.tool-card {
    background-color: var(--white-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    text-decoration: none;
    color: var(--text-dark);
    display: flex;
    flex-direction: column;
    transition: transform 0.2s, box-shadow 0.2s;
}
.tool-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.1);
}
.tool-card h3 { 
    font-family: 'Merriweather', serif;
    font-size: 1.3rem;
    margin: 0 0 0.5rem 0;
    color: var(--dark-green);
}
.tool-card p { 
    margin: 0; 
    line-height: 1.6; 
    color: #555; 
    flex-grow: 1; 
}