body {
    margin: 0;
    font-family: "Segoe UI", -apple-system, BlinkMacSystemFont, "Roboto", "Helvetica Neue", Arial, sans-serif;
    background: #f4f6f8;
    color: #333;
}

/* HOME PAGE */
.container {
    max-width: 900px;
    margin: 60px auto;
    text-align: center;
}

.module-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 20px;
    margin-top: 40px;
}

.module-card {
    padding: 20px;
    background: white;
    border-radius: 8px;
    text-decoration: none;
    color: #333;
    font-weight: bold;
    border: 1px solid #ddd;
    transition: 0.2s;
}

.module-card:hover {
    background: #0078d4;
    color: white;
}

/* MODULE PAGE */
.layout {
    display: flex;
    height: 100vh;
}

.sidebar {
    width: 260px;
    background: #1f2937;
    color: white;
    padding: 20px;
}

.sidebar h2 {
    margin-top: 0;
}

.table-list {
    list-style: none;
    padding: 0;
}

.table-list li {
    margin: 10px 0;
}

.table-list a {
    color: #9ca3af;
    text-decoration: none;
}

.table-list a:hover {
    color: white;
}

.content {
    flex: 1;
    padding: 40px;
    background: #f9fafb;
}

.content h1 {
    margin-top: 0;
}

.back-btn {
    background: #374151;
    color: white;
    border: none;
    padding: 8px 14px;
    margin: 10px 0;
    border-radius: 4px;
    cursor: pointer;
    width: 100%;
    text-align: left;
}

.back-btn:hover {
    background: #4b5563;
}