/* 全局样式 */
body {
    font-family:
        system-ui,
        -apple-system,
        sans-serif;
    margin: 0;
    padding: 0;
    background: #f5f5f5;
    color: #333;
    line-height: 1.6;
}

.container {
    max-width: 800px;
    margin: 20px auto;
    padding: 0 15px;
}

/* 标题样式 */
.header {
    text-align: center;
    margin-bottom: 30px;
    padding: 20px 0;
}

.header h1 {
    margin: 0;
    color: #333;
    font-size: 2.5rem;
}

.header p {
    margin-top: 10px;
    color: #666;
}

/* 卡片样式 */
.card {
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    margin-bottom: 20px;
    overflow: hidden;
}

.card-body {
    padding: 20px;
}

.card-title {
    margin-top: 0;
    margin-bottom: 15px;
    font-size: 1.2rem;
    color: #444;
}

/* 帖子样式 */
.post-form {
    margin-bottom: 30px;
}

.post-content {
    margin-bottom: 15px;
    word-break: break-word;
    overflow-wrap: break-word;
}

.post-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.8rem;
    color: #777;
    margin-top: 15px;
    padding-top: 10px;
    border-top: 1px solid #eee;
    flex-wrap: wrap;
    gap: 8px;
}

.post-time {
    font-size: 0.8rem;
    color: #6c757d;
}

.post-actions {
    display: flex;
    gap: 8px;
}

.post-info {
    display: flex;
    gap: 10px;
    align-items: center;
}

/* 评论样式 */
.comment-section {
    background-color: #f8f9fa;
    padding: 15px;
    border-radius: 0 0 10px 10px;
    border-top: 1px solid #e9ecef;
    margin-top: 0;
}

.comments-header {
    padding-bottom: 8px;
    margin-bottom: 12px;
    border-bottom: 1px solid #eee;
    justify-content: flex-start !important;
}

.comments-status {
    font-size: 0.9rem;
    color: #6c757d;
}

.comment {
    border-left: 2px solid #dde4e9;
    padding: 10px 15px;
    margin-bottom: 15px;
    background-color: #f9f9f9;
    border-radius: 3px;
}

.comment:last-child {
    margin-bottom: 0;
    border-bottom: none;
}

.comment-content {
    margin-bottom: 10px;
    word-break: break-word;
    line-height: 1.5;
}

.comment-footer {
    font-size: 0.8rem;
    padding-top: 5px;
}

.comment-time {
    font-size: 0.8rem;
    color: #6c757d;
}

.comment-actions {
    display: flex;
    gap: 10px;
}

.like-btn {
    border: none;
    background: none;
    padding: 0 5px;
    cursor: pointer;
    opacity: 0.7;
    transition: opacity 0.2s ease;
}

.like-btn:hover {
    opacity: 1;
    color: #495057 !important;
}

.comments-wrapper {
    max-height: 400px;
    overflow-y: auto;
    margin-bottom: 15px;
    padding-right: 5px;
}

.comment-form {
    margin-top: 15px;
    border-top: 1px solid #eee;
    padding-top: 15px;
}

/* 表单元素 */
.form-control {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
    transition:
        border-color 0.2s,
        box-shadow 0.2s,
        background-color 0.2s;
    box-sizing: border-box;
}

.form-control:focus {
    outline: 0;
    box-shadow: 0 0 0 0.1rem rgba(73, 80, 87, 0.8);
    background-color: #fff;
}

.new-comment-content {
    min-height: 80px;
    resize: vertical;
    border-color: #e9ecef;
    background-color: #f8f9fa;
}

.new-comment-content:focus {
    background-color: #fff;
    box-shadow: 0 0 0 0.1rem rgba(73, 80, 87, 0.8);
}

textarea.form-control {
    min-height: 100px;
    resize: vertical;
    line-height: 1.5;
    font-size: 0.95rem;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    font-weight: 400;
    text-align: center;
    vertical-align: middle;
    cursor: pointer;
    background-color: transparent;
    border: 1px solid transparent;
    padding: 0.375rem 0.75rem;
    font-size: 1rem;
    line-height: 1.5;
    border-radius: 0.25rem;
    transition:
        color 0.15s,
        background-color 0.15s,
        border-color 0.15s;
}

.btn-primary {
    color: #fff;
    background-color: #495057;
    border-color: #495057;
    font-weight: normal;
}

.btn-primary:hover {
    background-color: #343a40;
    border-color: #343a40;
    color: #fff;
}

.btn-secondary {
    color: #fff;
    background-color: #495057;
    border-color: #495057;
    transition: all 0.2s ease;
    font-weight: normal;
}

.btn-secondary:hover {
    background-color: #343a40;
    border-color: #343a40;
    color: #fff;
}

.btn-outline-primary {
    color: #495057;
    border-color: #495057;
    background-color: transparent;
}

.btn-outline-primary:hover {
    color: #fff;
    background-color: #343a40;
    border-color: #343a40;
}

.loading-text {
    display: none;
}

.show-comments {
    padding: 4px 10px;
    font-size: 0.85rem;
    color: #6c757d;
    margin-left: auto;
}

.btn-sm {
    padding: 0.25rem 0.5rem;
    font-size: 0.875rem;
    border-radius: 0.2rem;
}

/* 工具类 */
.text-center {
    text-align: center;
}

.float-end {
    float: right;
}

.mt-2 {
    margin-top: 0.5rem;
}

.mt-3 {
    margin-top: 1rem;
}

.mb-2 {
    margin-bottom: 0.5rem;
}

.mb-3 {
    margin-bottom: 1rem;
}

.mb-4 {
    margin-bottom: 1.5rem;
}

.p-2 {
    padding: 0.5rem;
}

.p-3 {
    padding: 1rem;
}

.p-4 {
    padding: 1.5rem;
}

.clearfix::after {
    content: "";
    clear: both;
    display: table;
}

/* 加载指示器 */
.loading {
    text-align: center;
    padding: 20px;
    display: block;
    width: 100%;
}

.spinner {
    display: inline-block;
    width: 1rem;
    height: 1rem;
    border: 0.125rem solid rgba(0, 0, 0, 0.1);
    border-right-color: #495057;
    border-radius: 50%;
    animation: spinner 0.75s linear infinite;
    margin: 5px;
}

.error-message {
    color: #6c757d;
    padding: 10px;
}

.retry-btn {
    padding: 3px 10px;
    font-size: 0.8rem;
}

@keyframes spinner {
    to {
        transform: rotate(360deg);
    }
}

/* 错误和警告 */
.alert {
    position: relative;
    padding: 0.75rem 1.25rem;
    margin-bottom: 1rem;
    border: 1px solid transparent;
    border-radius: 0.25rem;
    text-align: left;
}

.error-message {
    color: #6c757d;
    padding: 10px;
}

.retry-btn {
    padding: 3px 10px;
    font-size: 0.8rem;
}

.alert-danger {
    color: #721c24;
    background-color: #f8d7da;
    border-color: #f5c6cb;
}

.alert-warning {
    color: #856404;
    background-color: #fff3cd;
    border-color: #ffeeba;
}

.alert-info {
    color: #0c5460;
    background-color: #d1ecf1;
    border-color: #bee5eb;
}

/* 折叠内容样式 */
.collapsible-content {
    position: relative;
    overflow: hidden;
    max-height: 200px;
    transition:
        max-height 0.3s,
        opacity 0.3s;
}

.collapsible-content.expanded {
    max-height: none;
    overflow: visible;
}

.content-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 50px;
    background: linear-gradient(rgba(255, 255, 255, 0), rgba(255, 255, 255, 1));
    pointer-events: none;
}

.expand-btn {
    position: relative;
    bottom: 0;
    width: 100%;
    background: transparent;
    border: none;
    color: #4a6fa5;
    padding: 5px;
    cursor: pointer;
    font-size: 0.9rem;
}

.expand-btn:hover {
    text-decoration: underline;
}

/* 分页 */
.pagination {
    display: flex;
    padding-left: 0;
    list-style: none;
    border-radius: 0.25rem;
    justify-content: center;
    margin: 20px 0;
}

.pagination li {
    margin: 0 2px;
    display: flex;
    align-items: center;
}

.pagination a {
    position: relative;
    display: block;
    padding: 5px 10px;
    margin-left: -1px;
    line-height: 1.25;
    color: #495057;
    background-color: #fff;
    border: 1px solid #dee2e6;
    border-radius: 4px;
    text-decoration: none;
    font-size: 13px;
}

.pagination a:hover {
    z-index: 2;
    color: #fff;
    text-decoration: none;
    background-color: #343a40;
    border-color: #343a40;
}

.pagination li.active a {
    z-index: 3;
    color: #fff;
    background-color: #495057;
    border-color: #495057;
    font-weight: 500;
}

.pagination li.disabled a {
    color: #adb5bd;
    pointer-events: none;
    cursor: auto;
    background-color: #fff;
    border-color: #dee2e6;
}

.pagination li.page-jump {
    display: flex;
    align-items: center;
    margin-left: 4px;
}

.pagination .page-input {
    padding: 4px 4px;
    width: 20px;
    text-align: center;
    border: 1px solid #dee2e6;
    border-radius: 4px 0 0 4px;
    line-height: 1.25;
    outline: none;
    font-size: 13px;
}

.pagination .jump-btn {
    color: white;
    background-color: #495057;
    padding: 4px 6px;
    border: none;
    border-radius: 0 4px 4px 0;
    line-height: 1.25;
    cursor: pointer;
    font-weight: bold;
}

.pagination .jump-btn:hover {
    background-color: #343a40;
}