* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f4f4f4;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

header {
    background: #2c3e50;
    color: white;
    padding: 1rem 0;
    margin-bottom: 20px;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

nav ul {
    list-style: none;
    display: flex;
}

nav ul li {
    margin-left: 20px;
}

nav ul li a {
    color: white;
    text-decoration: none;
    padding: 5px 10px;
    border-radius: 3px;
    transition: background 0.3s;
    display: flex;
    align-items: center;
}

nav ul li a:hover {
    background: rgba(255, 255, 255, 0.1);
}

.alert {
    padding: 10px 15px;
    margin-bottom: 20px;
    border: 1px solid transparent;
    border-radius: 4px;
}

.alert-success {
    color: #155724;
    background-color: #d4edda;
    border-color: #c3e6cb;
}

.card {
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 20px;
    margin-bottom: 20px;
}

.btn {
    display: inline-block;
    padding: 8px 16px;
    background: #3498db;
    color: white;
    text-decoration: none;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background 0.3s;
}

.btn:hover {
    background: #2980b9;
}

.btn-danger {
    background: #e74c3c;
}

.btn-danger:hover {
    background: #c0392b;
}

.btn-success {
    background: #27ae60;
}

.btn-success:hover {
    background: #219a52;
}

.btn-warning {
    background: #f39c12;
}

.btn-warning:hover {
    background: #e67e22;
}

.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
}

.form-control {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
}

textarea.form-control {
    min-height: 120px;
    resize: vertical;
}

.post {
    border-bottom: 1px solid #eee;
    padding: 15px 0;
}

.post:last-child {
    border-bottom: none;
}

.post-title {
    font-size: 1.2em;
    font-weight: bold;
    color: #2c3e50;
    margin-bottom: 10px;
}

.post-meta {
    font-size: 0.9em;
    color: #7f8c8d;
    margin-bottom: 10px;
}

.post-content {
    margin-bottom: 10px;
}

.reply {
    background: #f8f9fa;
    padding: 15px;
    margin-bottom: 10px;
    border-radius: 4px;
}

.reply-meta {
    font-size: 0.9em;
    color: #7f8c8d;
    margin-bottom: 5px;
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

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

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

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

.role-admin {
    color: #3498db;
    font-weight: bold;
}

.role-user {
    color: #27ae60;
}

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

/* 上传进度条样式 */
.progress-container {
    margin: 20px 0;
    background: #f8f9fa;
    border-radius: 8px;
    padding: 15px;
    border: 1px solid #e9ecef;
}

.progress-bar {
    width: 100%;
    height: 20px;
    background: #e9ecef;
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: 10px;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #3498db, #2ecc71);
    border-radius: 10px;
    width: 0%;
    transition: width 0.3s ease;
}

.progress-text {
    text-align: center;
    font-weight: bold;
    color: #2c3e50;
    margin-bottom: 10px;
}

.upload-status {
    text-align: center;
    font-size: 14px;
    padding: 8px;
    border-radius: 4px;
    margin-top: 10px;
}

.upload-status.success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.upload-status.error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.upload-status.info {
    background: #d1ecf1;
    color: #0c5460;
    border: 1px solid #bee5eb;
}

/* 版权信息样式 */
.copyright {
    position: fixed;
    bottom: 10px;
    right: 10px;
    font-size: 12px;
    color: #7f8c8d;
    opacity: 0.7;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.8);
    padding: 5px 10px;
    border-radius: 3px;
    pointer-events: none;
}

.badge {
    background: #e74c3c;
    color: white;
    padding: 2px 6px;
    border-radius: 10px;
    font-size: 0.7em;
    margin-left: 5px;
}