body {
    font-family: Verdana, Geneva, sans-serif;
    background: #e9ecef;
    margin: 0;
    padding: 20px 0;
}

* {
    box-sizing: border-box;
}

.page {
    max-width: 980px;
    margin: 0 auto;
}

.header {
    background: #23527c;
    color: #fff;
    padding: 20px 30px;
    border-bottom: 3px solid #1a3f5f;
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.brand {
    font-size: 20px;
    font-weight: normal;
    color: #fff;
}

.nav {
    display: flex;
    gap: 15px;
}

.nav a {
    color: #fff;
    text-decoration: none;
    font-size: 13px;
    padding: 5px 10px;
    border-radius: 3px;
    transition: background 0.2s;
}

.nav a:hover {
    background: rgba(255,255,255,0.15);
}

.content {
    display: grid;
    gap: 20px;
    padding: 0 30px 20px 30px;
}

.card {
    background: #fff;
    border: 1px solid #bbb;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    padding: 25px;
}

h2 {
    font-size: 18px;
    color: #333;
    margin: 0 0 15px 0;
    padding-bottom: 10px;
    border-bottom: 2px solid #23527c;
    font-weight: normal;
}

h3 {
    font-size: 14px;
    color: #555;
    margin: 20px 0 10px 0;
    font-weight: bold;
}

.alert {
    padding: 12px 15px;
    margin-bottom: 15px;
    border: 1px solid;
    font-size: 13px;
}

.alert-success {
    background: #dff0d8;
    color: #3c763d;
    border-color: #d6e9c6;
}

.alert-error {
    background: #f2dede;
    color: #a94442;
    border-color: #ebccd1;
}

.alert-info {
    background: #d9edf7;
    color: #31708f;
    border-color: #bce8f1;
}

.row {
    display: flex;
    gap: 8px;
    align-items: center;
    margin: 10px 0;
}

.form {
    margin: 15px 0;
}

.form label {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 12px;
    font-size: 13px;
    color: #555;
    font-weight: bold;
}

.form input[type="text"],
.form input[type="password"],
.form input[type="file"] {
    width: 100%;
    padding: 6px 8px;
    border: 1px solid #ccc;
    font-size: 13px;
    font-family: Verdana, Geneva, sans-serif;
    background: #fff;
    color: #333;
}

.form input:focus {
    outline: none;
    border-color: #66afe9;
    box-shadow: 0 0 3px rgba(102, 175, 233, 0.5);
}

.btn {
    padding: 8px 16px;
    border: 1px solid;
    font-size: 13px;
    cursor: pointer;
    font-family: Verdana, Geneva, sans-serif;
    margin-right: 5px;
}

.btn-primary {
    background: #337ab7;
    color: white;
    border-color: #2e6da4;
}

.btn-primary:hover {
    background: #286090;
    border-color: #204d74;
}

.btn-danger {
    background: #d9534f;
    color: white;
    border-color: #d43f3a;
}

.btn-danger:hover {
    background: #c9302c;
    border-color: #ac2925;
}

.btn.small {
    padding: 4px 8px;
    font-size: 12px;
}

.table {
    width: 100%;
    border-collapse: collapse;
    margin: 15px 0;
}

.table th,
.table td {
    border-bottom: 1px solid #ddd;
    padding: 10px;
    text-align: left;
    font-size: 13px;
}

.table th {
    background: #f8f9fa;
    font-weight: bold;
    color: #555;
}

.breadcrumbs {
    margin-bottom: 10px;
    font-size: 13px;
}

.breadcrumbs a {
    color: #337ab7;
    text-decoration: none;
}

.breadcrumbs a:hover {
    text-decoration: underline;
}

.log {
    background: #f5f5f5;
    border: 1px solid #ccc;
    padding: 12px;
    font-family: 'Courier New', monospace;
    font-size: 12px;
    max-height: 400px;
    overflow-y: auto;
    color: #333;
    white-space: pre-wrap;
    margin: 15px 0;
}

.muted {
    color: #777;
    margin-bottom: 10px;
    font-size: 12px;
}

.editor {
    width: 100%;
    min-height: 300px;
    background: #fff;
    color: #333;
    border: 1px solid #ccc;
    padding: 8px;
    font-family: 'Courier New', monospace;
    font-size: 13px;
}

.editor:focus {
    outline: none;
    border-color: #66afe9;
    box-shadow: 0 0 3px rgba(102, 175, 233, 0.5);
}

.footer {
    margin-top: 20px;
    padding: 15px 30px;
    font-size: 12px;
    color: #666;
    text-align: center;
    background: #f8f9fa;
    border-top: 1px solid #ddd;
}

.upload-zone {
    margin: 15px 0;
}

.upload-area {
    border: 2px dashed #ccc;
    padding: 30px;
    text-align: center;
    background: #fafafa;
    cursor: pointer;
    transition: all 0.3s;
}

.upload-area:hover {
    border-color: #337ab7;
    background: #f0f8ff;
}

.upload-zone.drag-over .upload-area {
    border-color: #337ab7;
    background: #e6f2ff;
    border-style: solid;
}

.upload-icon {
    font-size: 48px;
    margin-bottom: 10px;
}

.upload-text {
    font-size: 13px;
    color: #555;
}

.upload-text strong {
    color: #333;
}

.upload-text a {
    color: #337ab7;
    text-decoration: none;
}

.upload-text a:hover {
    text-decoration: underline;
}

.upload-filename {
    margin-top: 10px;
    font-size: 13px;
    color: #3c763d;
    font-weight: bold;
}

#upload-btn {
    margin-top: 10px;
}