/* --- Basic Setup & Variables --- */
:root {
    --primary-blue: #004a99;
    --secondary-blue: #007bff;
    --light-gray: #f8f9fa;
    --medium-gray: #e9ecef;
    --dark-gray: #343a40;
    --border-color: #dee2e6;
    --danger-red: #dc3545;
}

body {
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    background-color: #fff;
    color: var(--dark-gray);
    margin: 0;
    padding: 0;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

/* --- Header --- */
header {
    padding: 20px 0;
    border-bottom: 2px solid var(--border-color);
    margin-bottom: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap; /* For responsiveness */
}

.header-content {
    display: flex;
    align-items: center;
}

.logo-area {
    display: flex;
    align-items: center;
    border-right: 1px solid var(--border-color);
    padding-right: 20px;
    margin-right: 20px;
}

.logo {
    height: 60px;
    margin-right: 15px;
}

.institute-info h1 {
    font-size: 1.5rem;
    color: var(--primary-blue);
    margin: 0;
    font-weight: 900;
}

.institute-info p {
    font-size: 0.9rem;
    margin: 0;
    color: #6c757d;
}

.top-nav a {
    text-decoration: none;
    color: var(--primary-blue);
    margin-left: 20px;
    font-weight: 500;
}

.top-nav a.login-btn {
    background-color: var(--primary-blue);
    color: white;
    padding: 8px 15px;
    border-radius: 5px;
}

/* --- Main Content --- */
main h2 {
    font-size: 2rem;
    color: var(--primary-blue);
    border-bottom: 2px solid var(--medium-gray);
    padding-bottom: 10px;
    margin-bottom: 1rem;
}

main h3 {
    font-size: 1.5rem;
    color: var(--dark-gray);
    margin-top: 2rem;
    margin-bottom: 1rem;
}

/* --- Recruitment Table --- */
.table-container {
    overflow-x: auto; /* Important for mobile responsiveness */
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 2rem;
}

th, td {
    border: 1px solid var(--border-color);
    padding: 12px 15px;
    text-align: left;
    vertical-align: top;
}

thead {
    background-color: var(--light-gray);
}

th {
    font-weight: 700;
    color: var(--primary-blue);
}

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

tbody tr:hover {
    background-color: var(--medium-gray);
}

td strong {
    font-weight: 500;
}

.btn {
    display: inline-block;
    padding: 6px 12px;
    margin: 3px;
    font-size: 0.85rem;
    text-decoration: none;
    border-radius: 4px;
    border: 1px solid transparent;
    text-align: center;
    white-space: nowrap;
}

.btn-primary {
    background-color: var(--secondary-blue);
    color: white;
}

.btn-secondary {
    background-color: #6c757d;
    color: white;
}

.btn-danger {
    background-color: var(--danger-red);
    color: white;
}

.status-closed {
    font-weight: 500;
    color: var(--danger-red);
    display: block;
    margin-bottom: 5px;
}

/* --- Accordion Section --- */
.accordion details {
    border: 1px solid var(--border-color);
    border-radius: 5px;
    margin-bottom: 10px;
}
.accordion details[open] {
    border-color: var(--primary-blue);
}

.accordion summary {
    padding: 15px;
    font-weight: 500;
    font-size: 1.1rem;
    cursor: pointer;
    list-style: none; /* Remove default marker */
    position: relative;
    background-color: var(--light-gray);
}

.accordion summary::before {
    content: '►'; /* Collapsed state icon */
    position: absolute;
    left: 15px;
    top: 15px;
    font-size: 0.8em;
    color: var(--primary-blue);
    transform: rotate(0deg);
    transition: transform 0.2s;
}

.accordion details[open] summary::before {
    transform: rotate(90deg); /* Expanded state icon */
}

.accordion summary {
    padding-left: 40px; /* Make space for the icon */
}

.details-content {
    padding: 0 15px 15px 40px;
    border-top: 1px solid var(--border-color);
    background-color: #fff;
}
.details-content p {
    margin: 10px 0 0;
}

/* --- Footer --- */
footer {
    text-align: center;
    margin-top: 3rem;
    padding: 2rem 0;
    border-top: 1px solid var(--border-color);
    font-size: 0.9rem;
    color: #6c757d;
}

footer p {
    margin: 5px 0;
}


/* --- Responsive Design --- */
@media (max-width: 992px) {
    .header-content {
        flex-direction: column;
        align-items: flex-start;
        text-align: left;
    }
    .logo-area {
        border-right: none;
        padding-right: 0;
        margin-right: 0;
        margin-bottom: 10px;
    }
}

@media (max-width: 768px) {
    header {
        flex-direction: column;
        align-items: flex-start;
    }
    .top-nav {
        margin-top: 15px;
        width: 100%;
        display: flex;
        justify-content: flex-start;
    }
    .top-nav a {
        margin-left: 0;
        margin-right: 15px;
    }
    .institute-info h1 {
        font-size: 1.2rem;
    }
    main h2 {
        font-size: 1.6rem;
    }
}