:root {
    --primary-color: #0056b3; --primary-hover: #004a99; --background-color: #f4f7f9;
    --container-bg: #ffffff; --text-color: #212529; --muted-text-color: #6c757d;
    --border-color: #dee2e6; --success-color: #28a745; --error-color: #dc3545;
}
body {
    font-family: 'Be Vietnam Pro', sans-serif; background-color: var(--background-color);
    color: var(--text-color); display: flex; justify-content: center; align-items: center;
    min-height: 100vh; margin: 0; padding: 20px; box-sizing: border-box; font-size: 16px;
}
.container {
    background-color: var(--container-bg); padding: 30px 40px; border-radius: 12px;
    box-shadow: 0 4px 25px rgba(0, 0, 0, 0.08); width: 100%; max-width: 700px; text-align: center;
}
.logo { max-width: 220px; height: auto; margin: 0 auto 25px auto; display: block; }
h1 { color: var(--primary-color); font-size: 1.8em; margin-bottom: 1rem; font-weight: 700; text-transform: uppercase; }
p { font-size: 1rem; line-height: 1.6; margin-bottom: 1rem; color: var(--muted-text-color); }
.instruction { text-align: left; margin-bottom: 1.5rem; font-size: 1.1rem; color: var(--text-color); }
.form-group { margin-bottom: 2rem; text-align: left; }
label { display: block; margin-bottom: 8px; font-weight: 500; font-size: 1rem; }
input, select, textarea {
    width: 100%; padding: 12px 15px; border-radius: 8px; border: 1px solid var(--border-color);
    box-sizing: border-box; font-size: 1rem; font-family: 'Be Vietnam Pro', sans-serif;
    transition: border-color 0.3s, box-shadow 0.3s;
}
textarea { min-height: 110px; }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--primary-color); box-shadow: 0 0 0 4px rgba(0, 86, 179, 0.15); }
button {
    width: 100%; padding: 15px; border-radius: 8px; border: none; background-color: var(--primary-color);
    color: white; font-size: 1.1rem; font-weight: 700; cursor: pointer;
    transition: background-color 0.3s, transform 0.2s; margin-top: 20px;
}
button:hover { background-color: var(--primary-hover); transform: translateY(-2px); }
button:disabled { background-color: #999; cursor: not-allowed; transform: none; }
.report-category { text-align: left; padding-top: 20px; border-top: 1px solid var(--border-color); margin-top: 25px; }
.report-category h2 { margin: 0; font-size: 1.2rem; font-weight: 700; color: var(--text-color); text-transform: uppercase; }
.category-note { font-size: 0.85rem; color: var(--muted-text-color); margin: 4px 0 12px 0; font-style: italic; line-height: 1.5; }
.file-upload-group { margin-top: 30px; padding-top: 20px; border-top: 1px solid var(--border-color); }
#image-upload { border: 1px solid var(--border-color); padding: 10px; border-radius: 8px; width: 100%; }
#file-list-display { margin-top: 10px; }
.file-item { font-style: italic; color: var(--muted-text-color); font-size: 0.9rem; padding: 2px 0; }
.hidden { display: none; }
#message { margin-top: 20px; font-weight: 500; font-size: 1rem; }
.success { color: var(--success-color); }
.error { color: var(--error-color); }
@media (max-width: 600px) {
    body { padding: 10px; }
    .container { padding: 20px 25px; }
    h1 { font-size: 1.6em; }
    .logo { max-width: 160px; margin-bottom: 20px; }
    button { padding: 14px; font-size: 1rem; }
    textarea { min-height: 100px; }
}