body {
    background: #f7f9fc;
    color: #333;
    font-family: 'Segoe UI', sans-serif;
    padding: 20px;
    margin: 0;
}

.container {
    max-width: 960px;
    margin: 0 auto;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.05);
    padding: 30px;
}

h2 {
    margin-top: 0;
    color: #2c3e50;
}

form {
    margin-bottom: 20px;
}

input, button, select, progress {
    width: 100%;
    padding: 10px;
    margin: 8px 0;
    border: 1px solid #ccc;
    border-radius: 8px;
    font-size: 15px;
    box-sizing: border-box;
}

input:focus, select:focus {
    border-color: #3498db;
    outline: none;
}

button {
    background-color: #3498db;
    color: white;
    font-weight: bold;
    border: none;
    cursor: pointer;
}

button:hover {
    background-color: #2980b9;
}

.upload-form {
    display: grid;
    grid-template-columns: 1fr;
    gap: 10px;
}

#dropZone {
    border: 2px dashed #aaa;
    padding: 30px;
    text-align: center;
    margin-top: 20px;
    border-radius: 10px;
    background: #fafafa;
    cursor: pointer;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
    font-size: 14px;
}

thead {
    background-color: #ecf0f1;
}

th, td {
    text-align: left;
    padding: 12px;
    border-bottom: 1px solid #ddd;
}

td small {
    color: #888;
}

a {
    color: #3498db;
    margin-right: 8px;
}

a:hover {
    text-decoration: underline;
}

.error {
    color: #e74c3c;
    font-weight: bold;
}

.logout {
    float: right;
    font-size: 14px;
    color: #e74c3c;
    text-decoration: none;
}