style.css

:root {
    --primary-blue: #007bff;
    --dark-blue: #004080;
    --light-gray: #f8f9fa;
    --medium-gray: #e9ecef;
    --dark-gray: #495057;
    --error-red: #ff4d4d;
}

body {
    font-family: 'Roboto', 'Open Sans', sans-serif;
    background-color: var(--light-gray);
    color: var(--dark-gray);
    margin: 0;
    padding: 20px;
}

h1 {
    font-size: 24px;
    font-weight: bold;
    color: var(--dark-blue);
}

h2 {
    font-size: 20px;
    font-weight: 600;
    color: var(--primary-blue);
}

p, label {
    font-size: 14px;
}

button {
    font-size: 13px;
    font-weight: bold;
    color: white;
    background-color: var(--primary-blue);
    border: none;
    padding: 8px 16px;
    border-radius: 4px;
    cursor: pointer;
}

button:hover {
    background-color: #0069d9;
}

button:active {
    background-color: #0056b3;
}

input[type="text"], select {
    padding: 6px;
    font-size: 13px;
    border: 1px solid var(--medium-gray);
    border-radius: 4px;
    width: 100%;
    margin-top: 5px;
}

.container {
    width: 80%;
    max-width: 1000px;
    margin: 0 auto;
    padding: 10px;
}

.table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 20px;
}

.table th, .table td {
    padding: 8px;
    font-size: 13px;
    border-bottom: 1px solid var(--medium-gray);
    text-align: left;
}

.table th {
    background-color: var(--medium-gray);
}

.table tr:nth-child(even) {
    background-color: var(--light-gray);
}

.error {
    color: var(--error-red);
    font-size: 14px;
}

.toast {
    position: fixed;
    top: 10px;
    right: 10px;
    background-color: var(--primary-blue);
    color: white;
    padding: 10px;
    border-radius: 4px;
    display: none;
}

.section {
    margin-bottom: 20px;
    padding: 15px;
    background-color: #ffffff;
    border-radius: 8px;
    box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.1);
}

.game-header {
    width: 80%; 
    max-width: 1000px;
    margin: 0 auto 20px auto;
    padding: 15px;
    background-color: var(--primary-blue);
    text-align: center;
    border-radius: 8px;
    box-shadow: 0px 4px 8px rgba(0, 0, 0, 0.2);
}

.game-header h1 {
    color: white;
    font-size: 28px;
    font-weight: bold;
    margin: 0;
}

.section h2 {
    text-align: center;
    margin-top: 0;
}