/**
 * Lab Database System Stylesheet
 * REDCap-inspired professional design
 */

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    font-size: 14px;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* Header */
.header {
    background-color: #003366;
    color: white;
    padding: 15px 0;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header h1 {
    font-size: 24px;
    font-weight: normal;
}

.header-nav {
    display: flex;
    gap: 20px;
}

.header-nav a {
    color: white;
    text-decoration: none;
    padding: 5px 10px;
    border-radius: 3px;
    transition: background-color 0.3s;
}

.header-nav a:hover {
    background-color: #004080;
}

.user-info {
    color: #ccc;
    font-size: 12px;
}

/* Navigation Menu */
.nav-menu {
    background-color: #fff;
    border-bottom: 1px solid #ddd;
    box-shadow: 0 1px 2px rgba(0,0,0,0.05);
}

.nav-menu ul {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    list-style: none;
    display: flex;
    gap: 5px;
}

.nav-menu li a {
    display: block;
    padding: 12px 20px;
    color: #333;
    text-decoration: none;
    transition: background-color 0.3s;
}

.nav-menu li a:hover,
.nav-menu li a.active {
    background-color: #f0f0f0;
}

/* Cards */
.card {
    background-color: white;
    border: 1px solid #ddd;
    border-radius: 4px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.card-header {
    border-bottom: 2px solid #003366;
    padding-bottom: 10px;
    margin-bottom: 20px;
}

.card-header h2 {
    font-size: 18px;
    color: #003366;
    font-weight: bold;
}

.card-body {
    padding: 10px 0;
}

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

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
    color: #555;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="password"],
.form-group input[type="date"],
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid #ccc;
    border-radius: 3px;
    font-size: 14px;
    font-family: Arial, Helvetica, sans-serif;
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #4a90e2;
    box-shadow: 0 0 0 2px rgba(74, 144, 226, 0.1);
}

.form-group small {
    display: block;
    margin-top: 3px;
    color: #666;
    font-size: 12px;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 15px;
    margin-bottom: 15px;
}

.required::after {
    content: " *";
    color: #d9534f;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    font-size: 14px;
    cursor: pointer;
    text-decoration: none;
    transition: background-color 0.3s, box-shadow 0.3s;
}

.btn-primary {
    background-color: #4a90e2;
    color: white;
}

.btn-primary:hover {
    background-color: #357abd;
}

.btn-success {
    background-color: #5cb85c;
    color: white;
}

.btn-success:hover {
    background-color: #4cae4c;
}

.btn-danger {
    background-color: #d9534f;
    color: white;
}

.btn-danger:hover {
    background-color: #c9302c;
}

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

.btn-secondary:hover {
    background-color: #5a6268;
}

.btn-group {
    display: flex;
    gap: 10px;
    margin-top: 20px;
}

/* Tables */
.table-container {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    background-color: white;
}

table thead {
    background-color: #f8f9fa;
}

table th {
    padding: 12px;
    text-align: left;
    border-bottom: 2px solid #dee2e6;
    font-weight: bold;
    color: #495057;
}

table td {
    padding: 12px;
    border-bottom: 1px solid #dee2e6;
}

table tbody tr:hover {
    background-color: #f8f9fa;
}

table tbody tr:last-child td {
    border-bottom: none;
}

.table-actions {
    display: flex;
    gap: 5px;
}

.table-actions a {
    padding: 5px 10px;
    font-size: 12px;
}

/* Alerts */
.alert {
    padding: 12px 20px;
    border-radius: 4px;
    margin-bottom: 20px;
    border-left: 4px solid;
}

.alert-success {
    background-color: #d4edda;
    border-color: #28a745;
    color: #155724;
}

.alert-error {
    background-color: #f8d7da;
    border-color: #dc3545;
    color: #721c24;
}

.alert-info {
    background-color: #d1ecf1;
    border-color: #17a2b8;
    color: #0c5460;
}

.alert-warning {
    background-color: #fff3cd;
    border-color: #ffc107;
    color: #856404;
}

/* Dashboard Statistics */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background-color: white;
    border: 1px solid #ddd;
    border-radius: 4px;
    padding: 20px;
    text-align: center;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.stat-card h3 {
    font-size: 14px;
    color: #666;
    margin-bottom: 10px;
    text-transform: uppercase;
    font-weight: normal;
}

.stat-card .stat-value {
    font-size: 32px;
    font-weight: bold;
    color: #003366;
}

/* Search and Filter */
.search-bar {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.search-bar input[type="text"],
.search-bar input[type="date"],
.search-bar select {
    flex: 1;
    min-width: 200px;
}

.search-bar button {
    white-space: nowrap;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 5px;
    margin-top: 20px;
}

.pagination a,
.pagination span {
    padding: 8px 12px;
    border: 1px solid #ddd;
    border-radius: 3px;
    text-decoration: none;
    color: #333;
}

.pagination a:hover {
    background-color: #f0f0f0;
}

.pagination .current {
    background-color: #4a90e2;
    color: white;
    border-color: #4a90e2;
}

/* Login Page */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #003366 0%, #004080 100%);
}

.login-box {
    background-color: white;
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.2);
    width: 100%;
    max-width: 400px;
}

.login-box h2 {
    text-align: center;
    color: #003366;
    margin-bottom: 30px;
}

.login-box .form-group:last-of-type {
    margin-bottom: 25px;
}

.login-box .btn {
    width: 100%;
}

/* Footer */
.footer {
    text-align: center;
    padding: 20px;
    color: #666;
    font-size: 12px;
    border-top: 1px solid #ddd;
    margin-top: 40px;
}

/* Responsive */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 10px;
    }

    .nav-menu ul {
        flex-direction: column;
        gap: 0;
    }

    .search-bar {
        flex-direction: column;
    }

    .search-bar input[type="text"],
    .search-bar input[type="date"],
    .search-bar select {
        width: 100%;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }
}

/* Loading Spinner */
.spinner {
    border: 3px solid #f3f3f3;
    border-top: 3px solid #4a90e2;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 20px auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: #666; }
.mt-1 { margin-top: 10px; }
.mt-2 { margin-top: 20px; }
.mb-1 { margin-bottom: 10px; }
.mb-2 { margin-bottom: 20px; }
.hidden { display: none; }