/* message.css - 美化版 */
:root {
    --primary-color: #007cba;
    --primary-hover: #005a87;
    --danger-color: #dc3545;
    --danger-hover: #c82333;
    --secondary-color: #6c757d;
    --secondary-hover: #545b62;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --info-color: #17a2b8;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    --border-color: #e1e1e1;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 6px 12px rgba(0, 0, 0, 0.15);
    --radius: 8px;
    --transition: all 0.3s ease;
}

.message-container {
    max-width: 768px;
    margin: 20px auto;
    background: #fff;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: var(--transition);
}

.message-container:hover {
    box-shadow: var(--shadow-hover);
}

.message-header {
    background: linear-gradient(135deg, var(--primary-color), #0056b3);
    color: white;
    padding: 30px 20px;
    text-align: center;
    margin-bottom: 0;
}

.message-header h1 {
    margin: 0;
    font-size: 2.2em;
    font-weight: 300;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.message-header p {
    margin: 10px 0 0 0;
    font-size: 1.1em;
    opacity: 0.9;
}

.message-form {
    margin: 0;
    padding: 30px;
    border: none;
    border-bottom: 1px solid var(--border-color);
    background: #fafbfc;
}

.message-form h3 {
    margin-top: 0;
    margin-bottom: 20px;
    color: var(--dark-color);
    font-size: 1.4em;
    font-weight: 600;
    border-left: 4px solid var(--primary-color);
    padding-left: 12px;
}

.form-group {
    margin-bottom: 20px;
    position: relative;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--dark-color);
    font-size: 14px;
}

.form-control {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e9ecef;
    border-radius: 6px;
    font-size: 14px;
    box-sizing: border-box;
    transition: var(--transition);
    background: #fff;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 124, 186, 0.1);
}

textarea.form-control {
    min-height: 140px;
    resize: vertical;
    line-height: 1.5;
}

.form-group input[type="checkbox"] {
    margin-right: 8px;
    transform: scale(1.1);
}

.form-group small {
    color: #6c757d;
    font-size: 12px;
    margin-left: 5px;
}

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    margin: 5px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn i {
    margin-right: 8px;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
    box-shadow: 0 2px 4px rgba(0, 124, 186, 0.3);
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 124, 186, 0.4);
}

.btn-danger {
    background: var(--danger-color);
    color: white;
    box-shadow: 0 2px 4px rgba(220, 53, 69, 0.3);
}

.btn-danger:hover {
    background: var(--danger-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(220, 53, 69, 0.4);
}

.btn-secondary {
    background: var(--secondary-color);
    color: white;
    box-shadow: 0 2px 4px rgba(108, 117, 125, 0.3);
}

.btn-secondary:hover {
    background: var(--secondary-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(108, 117, 125, 0.4);
}

.btn-success {
    background: var(--success-color);
    color: white;
    box-shadow: 0 2px 4px rgba(40, 167, 69, 0.3);
}

.btn-success:hover {
    background: #218838;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(40, 167, 69, 0.4);
}

.message-list {
    padding: 20px;
    background: #fff;
}

.message-list h3 {
    color: var(--dark-color);
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--light-color);
    font-size: 1.3em;
    font-weight: 600;
}

.message-item {
    padding: 20px;
    margin-bottom: 20px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    background: #fff;
    transition: var(--transition);
    position: relative;
}

.message-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
    border-color: var(--primary-color);
}

.message-item:last-child {
    margin-bottom: 0;
}

.message-title {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--dark-color);
    line-height: 1.4;
}

.message-meta {
    font-size: 13px;
    color: #6c757d;
    margin-bottom: 12px;
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
}

.message-meta strong {
    color: var(--dark-color);
}

.message-content {
    margin-top: 15px;
    padding: 15px;
    background: var(--light-color);
    border-radius: 6px;
    border-left: 4px solid var(--info-color);
    line-height: 1.6;
}

.message-reply {
    margin-top: 15px;
    padding: 15px;
    background: linear-gradient(135deg, #e8f5e8, #d1ecf1);
    border-radius: 6px;
    border-left: 4px solid var(--success-color);
    line-height: 1.6;
}

.message-reply-preview {
    margin-top: 10px;
    padding: 12px;
    background: #e8f5e8;
    border-radius: 6px;
    font-size: 13px;
    border-left: 3px solid var(--success-color);
    color: #155724;
}

.private-message {
    background: linear-gradient(135deg, #f8f9fa, #e9ecef);
    border: 1px solid #dee2e6;
}

.private-message .message-content {
    background: #fff;
    border-left-color: #6c757d;
}

.status-replied {
    color: var(--success-color);
    font-weight: 600;
    font-size: 12px;
}

.status-pending {
    color: var(--warning-color);
    font-weight: 600;
    font-size: 12px;
}

.private-badge {
    background: var(--danger-color);
    color: white;
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
    margin-left: 8px;
    text-transform: uppercase;
}

.public-badge {
    background: var(--success-color);
    color: white;
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
    margin-left: 8px;
    text-transform: uppercase;
}

.message-actions {
    margin-top: 15px;
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.alert {
    padding: 15px 20px;
    margin-bottom: 20px;
    border-radius: var(--radius);
    border-left: 4px solid;
    font-weight: 500;
}

.alert-warning {
    background: #fff3cd;
    border-color: var(--warning-color);
    color: #856404;
}

.alert-info {
    background: #d1ecf1;
    border-color: var(--info-color);
    color: #0c5460;
}

.alert-success {
    background: #d4edda;
    border-color: var(--success-color);
    color: #155724;
}

.reply-form {
    margin-top: 25px;
    padding: 25px;
    background: linear-gradient(135deg, #f8f9fa, #e9ecef);
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
}

.reply-form h3 {
    margin-top: 0;
    margin-bottom: 20px;
    color: var(--dark-color);
    font-size: 1.3em;
    font-weight: 600;
}

.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin: 30px 0;
    flex-wrap: wrap;
}

.login-prompt {
    text-align: center;
    padding: 50px 20px;
    background: linear-gradient(135deg, #f8f9fa, #e9ecef);
    border-radius: var(--radius);
    margin: 20px;
}

.login-prompt p {
    font-size: 1.1em;
    color: var(--dark-color);
    margin-bottom: 20px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .message-container {
        margin: 10px;
        border-radius: 0;
    }
    
    .message-header {
        padding: 20px 15px;
    }
    
    .message-header h1 {
        font-size: 1.8em;
    }
    
    .message-form {
        padding: 20px 15px;
    }
    
    .message-list {
        padding: 15px;
    }
    
    .message-item {
        padding: 15px;
    }
    
    .btn {
        padding: 10px 18px;
        font-size: 13px;
    }
    
    .message-meta {
        flex-direction: column;
        gap: 8px;
    }
}

/* 动画效果 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.message-item {
    animation: fadeIn 0.5s ease-out;
}

/* 滚动条美化 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-hover);
}