/* CSS Variables */
:root {
    --primary-color: #007bff;
    --primary-hover: #0056b3;
    --dark-bg: #343a40;
    --dark-hover: #495057;
    --light-bg: #f8f9fa;
    --white: #ffffff;
    --text-color: #343a40;
    --border-color: #dee2e6;
    --table-header-bg: #e9ecef;
    --border-radius-sm: 5px;
    --border-radius-md: 8px;
    --success: #28a745;
    --warning: #ffc107;
    --error: #dc3545;
}

/* General Body Styles */
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    background-color: var(--light-bg);
    color: var(--text-color);
}

/* Main Container */
.container {
    width: 80%;
    max-width: 1200px;
    margin: 20px auto;
    padding: 20px;
    background-color: var(--white);
    border-radius: var(--border-radius-md);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.05);
}

/* Navigation Bar */
nav {
    background-color: var(--dark-bg);
    color: var(--white);
    padding: 1rem 0;
    margin-bottom: 2rem;
}

nav .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: transparent;
    box-shadow: none;
    margin-top: 0;
    margin-bottom: 0;
}

nav a {
    color: var(--white);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius-sm);
    transition: background-color 0.3s;
}

nav a:hover, nav a.active {
    background-color: var(--dark-hover);
}

nav .logo {
    font-weight: bold;
    font-size: 1.5rem;
}

nav .nav-links form button {
    font-size: 1rem;
}

/* Buttons */
button, .btn {
    display: inline-block;
    background-color: var(--primary-color);
    color: var(--white);
    border: none;
    padding: 10px 20px;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    text-decoration: none;
    font-size: 1rem;
    transition: background-color 0.3s;
}

button:hover, .btn:hover {
    background-color: var(--primary-hover);
}

/* Tables */
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

thead {
    background-color: var(--table-header-bg);
}

th, td {
    padding: 12px;
    border: 1px solid var(--border-color);
    text-align: left;
}

tbody tr:nth-child(odd) {
    background-color: var(--light-bg);
}

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

a:hover {
    text-decoration: underline;
}

/* Django Messages Framework */
.messages {
    padding: 0;
    margin: 1rem auto;
    list-style: none;
    width: 80%;
    max-width: 1200px;
}

.message {
    padding: 1rem;
    margin-bottom: 1rem;
    border-radius: var(--border-radius-sm);
    color: var(--white);
    font-weight: 500;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.message.success {
    background-color: var(--success); /* Green */
}

.message.warning {
    background-color: var(--warning); /* Yellow */
    color: #212529; /* Dark text for yellow bg */
}

.message.error {
    background-color: var(--error); /* Red */
}

/* =================================== */
/*         RESPONSIVE STYLES         */
/* =================================== */

/* For screens smaller than 768px (tablets and mobiles) */
@media (max-width: 768px) {
    /* Adjust the main container to take up more space */
    .container {
        width: 95%;
        padding: 15px;
    }

    /* Stack navigation bar items vertically */
    nav .container {
        flex-direction: column;
        align-items: flex-start; /* Align all items to the left */
    }

    nav .nav-links {
        margin-top: 1rem;
        width: 100%;
        display: flex;
        flex-direction: column;
        gap: 0.5rem; /* Add some space between stacked nav items */
    }

    nav a,
    nav .nav-links form button {
        width: 100%;
        text-align: left;
    }

    /* Make tables horizontally scrollable to avoid breaking the layout */
    table {
        display: block;
        overflow-x: auto; /* Adds a scrollbar if the table is too wide */
    }
}