:root {
    --primary-color: #0d6efd;
    --secondary-color: #6c757d;
    --background-color: #f8f9fa;
    --text-color: #212529;
    --navbar-bg: #343a40;
    --navbar-text: #ffffff;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    margin: 0;
    padding: 0;
}

/* Navbar */
.navbar {
    background-color: var(--navbar-bg);
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navbar-brand {
    color: var(--navbar-text);
    font-size: 1.5rem;
    font-weight: bold;
    text-decoration: none;
}

.navbar-nav {
    list-style: none;
    display: flex;
    gap: 1rem;
    margin: 0;
    padding: 0;
}

.nav-link {
    color: rgba(255, 255, 255, 0.75);
    text-decoration: none;
    transition: color 0.2s;
}

.nav-link:hover {
    color: var(--navbar-text);
}

/* Container */
.container {
    max-width: 960px;
    margin: 2rem auto;
    padding: 0 1rem;
}

/* Forms */
.form-group {
    margin-bottom: 1rem;
}

.form-control {
    display: block;
    width: 100%;
    padding: 0.375rem 0.75rem;
    font-size: 1rem;
    line-height: 1.5;
    color: #495057;
    background-color: #fff;
    background-clip: padding-box;
    border: 1px solid #ced4da;
    border-radius: 0.25rem;
    transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

.btn {
    display: inline-block;
    font-weight: 400;
    text-align: center;
    vertical-align: middle;
    user-select: none;
    border: 1px solid transparent;
    padding: 0.375rem 0.75rem;
    font-size: 1rem;
    line-height: 1.5;
    border-radius: 0.25rem;
    transition: color 0.15s ease-in-out, background-color 0.15s ease-in-out, border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
    cursor: pointer;
}

.btn-primary {
    color: #fff;
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-primary:hover {
    background-color: #0b5ed7;
    border-color: #0a58ca;
}

.styled-table {
    border-collapse: collapse;
    margin: 25px 0;
    font-size: 0.9em;
    font-family: sans-serif;
    min-width: 400px;
    width: 100%;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.15);
    border-radius: 5px 5px 0 0;
    overflow: hidden;
}

.styled-table tbody tr {
    border-bottom: 1px solid #dddddd;
}

.styled-table tbody tr:nth-of-type(even) {
    background-color: #f3f3f3;
}

.styled-table tbody tr:last-of-type {
    border-bottom: 2px solid var(--primary-color);
}

.styled-table tbody tr.active-row {
    font-weight: bold;
    color: var(--primary-color);
}

.styled-table th,
.styled-table td {
    padding: 15px 20px;
    text-align: center;
    vertical-align: middle;
}

.styled-table thead tr {
    background-color: var(--primary-color);
    color: #ffffff;
    text-align: center;
}

/* Alerts */
.alert {
    padding: 1rem;
    margin-bottom: 1rem;
    border: 1px solid transparent;
    border-radius: 0.25rem;
}

.alert-success {
    color: #0f5132;
    background-color: #d1e7dd;
    border-color: #badbcc;
}

/* Status Indicators */
.status-indicator {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: inline-block;
}

.status-stopped {
    background-color: #dc3545;
    /* Red */
    box-shadow: 0 0 5px #dc3545;
}

.status-starting {
    background-color: #ffc107;
    /* Yellow */
    box-shadow: 0 0 5px #ffc107;
}

.status-running {
    background-color: #198754;
    /* Green */
    box-shadow: 0 0 5px #198754;
}

.d-flex {
    display: flex;
}

.align-items-center {
    align-items: center;
}

.btn-warning {
    color: #000;
    background-color: #ffc107;
    border-color: #ffc107;
}

.btn-warning:hover {
    background-color: #ffca2c;
    border-color: #ffc720;
}