body {
    font-family: 'Roboto', sans-serif;
    background-color: #f0f4f8;
    margin: 0;
    padding: 0;
    color: #2d3748;
}
header {
    background-color: #1A2A44;
    color: white;
    padding: 1rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 1px 6px rgba(0, 0, 0, 0.1);
}
.logo img {
    height: 40px;
}
nav ul {
    list-style: none;
    display: flex;
    margin: 0;
    padding: 0;
}
nav ul li {
    margin-left: 2rem;
}
nav ul li a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    transition: color 0.3s;
}
nav ul li a:hover {
    color: #a3bffa;
}
.container {
    width: 90%;
    max-width: 800px;
    margin: 30px auto;
    background: #ffffff;
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}
h1 {
    text-align: center;
    color: #1A2A44;
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
}
.form-group {
    margin-bottom: 15px;
}
label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
    color: #4a5568;
    font-size: 0.85rem;
}
input, textarea {
    width: 100%;
    padding: 8px;
    border: 1px solid #e2e8f0;
    border-radius: 5px;
    font-size: 0.85rem;
    transition: border-color 0.3s, box-shadow 0.3s;
}
input:focus, textarea:focus {
    border-color: #2dd4bf;
    box-shadow: 0 0 4px rgba(45, 212, 191, 0.3);
    outline: none;
}
textarea {
    height: 80px;
    resize: vertical;
}
button {
    background-color: #2dd4bf;
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 600;
    transition: background-color 0.3s, transform 0.2s;
    width: 100%;
    margin-top: 10px;
}
button:hover {
    background-color: #1e9b8a;
    transform: translateY(-1px);
}
.progress {
    display: none;
    text-align: center;
    color: #2dd4bf;
    font-weight: 500;
    margin-top: 10px;
    font-size: 0.85rem;
}
.complaint-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 15px;
}
.complaint-table th, .complaint-table td {
    padding: 8px;
    text-align: left;
    border-bottom: 1px solid #e2e8f0;
    font-size: 0.8rem;
}
.complaint-table th {
    background-color: #2dd4bf;
    color: white;
}
.complaint-table tr:nth-child(even) {
    background-color: #f7fafc;
}
.complaint-table tr:hover {
    background-color: #edf2f7;
}
#searchBar {
    width: 100%;
    padding: 8px;
    margin-bottom: 15px;
    border: 1px solid #e2e8f0;
    border-radius: 5px;
    font-size: 0.85rem;
}
.no-complaints {
    text-align: center;
    color: #718096;
    padding: 15px;
    font-size: 0.85rem;
}
@media (max-width: 768px) {
    header {
        flex-direction: column;
        padding: 0.75rem;
    }
    nav ul {
        flex-direction: column;
        align-items: center;
        margin-top: 0.75rem;
    }
    nav ul li {
        margin: 0.75rem 0;
    }
    .container {
        width: 95%;
        padding: 15px;
    }
    h1 {
        font-size: 1.3rem;
    }
    .form-group {
        margin-bottom: 12px;
    }
    input, textarea {
        font-size: 0.8rem;
    }
    button {
        font-size: 0.85rem;
        padding: 8px 15px;
    }
    .complaint-table th, .complaint-table td {
        padding: 6px;
        font-size: 0.75rem;
    }
    #searchBar {
        font-size: 0.8rem;
    }
}
@media (max-width: 480px) {
    .container {
        padding: 10px;
    }
    .form-group label {
        font-size: 0.75rem;
    }
    textarea {
        height: 70px;
    }
    .complaint-table {
        display: block;
        overflow-x: auto;
    }
    .complaint-table th, .complaint-table td {
        min-width: 100px;
    }
    #searchBar {
        padding: 6px;
    }
}