/* Grid styling */
tr,td{
    border:1px;
    border-style: solid;
}
td{
    height: 50px;
    width: 50px;
    background-color: white;
    cursor: pointer;
}

/* Navigation styling */
.nav-buttons {
    display: flex;
    gap: 8px;
    margin-bottom: 20px;
    padding: 12px;
    background-color: #f8f9fa;
    border: 1px solid #dee2e6;
    border-radius: 0px;
}

.nav-button {
    padding: 8px 16px;
    background-color: #ffffff;
    color: #333;
    border: 1px solid #dee2e6;
    border-radius: 0px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.2s;
}

.nav-button:hover {
    background-color: #007bff;
    color: white;
    border-color: #007bff;
}

/* Grid cards styling */
.grid-selection {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    margin: 20px 0;
}

.grid-card {
    background: #f8f9fa;
    border: 2px solid #dee2e6;
    border-radius: 4px;
    padding: 20px;
    color: #333;
    text-align: center;
    min-width: 300px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
    cursor: pointer;
}

.grid-card:hover {
    border-color: #007bff;
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
}

.grid-card-content h3 {
    margin: 0 0 10px 0;
    font-size: 24px;
}

.grid-card-content p {
    margin: 0 0 20px 0;
    line-height: 1.5;
}

.grid-button {
    background-color: #007bff;
    color: white;
    border: 2px solid #007bff;
    padding: 12px 24px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    font-weight: bold;
    transition: all 0.3s ease;
}

.grid-button:hover {
    background-color: #0056b3;
    border-color: #0056b3;
}

/* General styling */
body {
    font-family: 'Arial', sans-serif;
    margin: 0;
    padding: 20px;
    background: #ffffff;
    min-height: 100vh;
}

header {
    text-align: center;
    margin-bottom: 30px;
}

header h1 {
    color: #333;
    font-size: 2.5em;
    margin-bottom: 10px;
}

header p {
    color: #666;
    font-size: 1.2em;
}

footer {
    text-align: center;
    margin-top: 40px;
    color: #666;
    font-style: italic;
}

/* Grid controls styling */
button {
    margin: 4px;
    padding: 8px 12px;
    background-color: #ffffff;
    color: #333;
    border: 1px solid #dee2e6;
    border-radius: 0px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.2s;
}

button:hover {
    background-color: #28a745;
    color: white;
    border-color: #28a745;
}

select {
    margin: 4px;
    padding: 8px;
    border-radius: 0px;
    border: 1px solid #dee2e6;
    font-size: 14px;
    background-color: #ffffff;
}

#grid {
    margin-top: 20px;
    border-collapse: collapse;
}