/* Basic styles for mobile-first responsive design */

:root {
    --primary-color: #4CAF50; /* Green */
    --secondary-color: #f44336; /* Red */
    --background-color: #f2f2f2;
    --text-color: #333;
    --border-color: #ddd;
    --form-bg-color: #fff;
    --button-hover-color: #45a049;
    --error-color: #d32f2f;
    --success-color: #4CAF50;
}

body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    max-width: 90%;
    margin: 20px auto;
    padding: 20px;
    background-color: var(--form-bg-color);
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

h1, h2 {
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 20px;
}

form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.form-group {
    margin-bottom: 15px;
}

label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
}

input[type="text"],
input[type="password"],
input[type="email"] {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    box-sizing: border-box;
    font-size: 16px;
}

button {
    background-color: var(--primary-color);
    color: white;
    padding: 12px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    transition: background-color 0.3s ease;
}

button:hover {
    background-color: var(--button-hover-color);
}

a {
    color: var(--primary-color);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.message-area {
    margin-bottom: 15px;
    padding: 10px;
    border-radius: 4px;
    text-align: center;
}

.message {
    padding: 10px;
    margin: 0;
}

.message.success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.message.error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* Table styles for admin page */
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

th, td {
    border: 1px solid var(--border-color);
    padding: 8px;
    text-align: left;
}

th {
    background-color: var(--background-color);
}

.locked-tournament {
    background-color: #f0f0f0; /* Light grey to indicate locked status */
}

/* Modal styles */
.modal {
    display: none; /* Hidden by default */
    position: fixed; /* Stay in place */
    z-index: 1; /* Sit on top */
    left: 0;
    top: 0;
    width: 100%; /* Full width */
    height: 100%; /* Full height */
    overflow: auto; /* Enable scroll if needed */
    background-color: rgba(0,0,0,0.4); /* Black w/ opacity */
    padding-top: 60px;
}

.modal-content {
    background-color: var(--form-bg-color);
    margin: 5% auto; /* 5% from the top and centered */
    padding: 20px;
    border: 1px solid var(--border-color);
    width: 80%; /* Could be more or less, depending on screen size */
    max-width: 500px;
    border-radius: 8px;
    position: relative;
    box-shadow: 0 4px 8px 0 rgba(0,0,0,0.2), 0 6px 20px 0 rgba(0,0,0,0.19);
}

.close-button {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
}

.close-button:hover,
.close-button:focus {
    color: black;
    text-decoration: none;
    cursor: pointer;
}

.checkbox-group {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
}

/* Responsive adjustments */
@media (min-width: 600px) {
    .container {
        max-width: 500px; /* Slightly wider for tablets */
    }
}

@media (min-width: 900px) {
    .container {
        max-width: 700px; /* Even wider for desktops */
    }
}