/* discussion.css - 修改版：毛玻璃风格，与 style.css 统一 */

/* --- 使用 style.css 的颜色变量体系 --- */
:root {
    --oj-primary-color: #7abd9a;
    --oj-glass-bg: rgba(122, 189, 154, 0.2);
    --oj-glass-bg-light: rgba(255, 255, 255, 0.1);
    --oj-text-color-light: #fff;
    --oj-text-color-dark: #333;
    --oj-border-color-light: rgba(255, 255, 255, 0.2);
    --oj-shadow-light: 0 4px 6px rgba(0, 0, 0, 0.1);
    --radius: 10px;
}

/* --- 新讨论表单区域 (发帖区) - 毛玻璃风格 --- */
#newDiscussionForm {
    margin-bottom: 20px;
    padding: 18px;
    background: var(--oj-glass-bg-light);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--oj-border-color-light);
    border-radius: var(--radius);
    color: var(--oj-text-color-light);
    box-shadow: var(--oj-shadow-light), inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

#newDiscussionForm h3 {
    color: var(--oj-text-color-light);
    margin-top: 0;
    margin-bottom: 15px;
    font-size: 1.3em;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--oj-border-color-light);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-size: 0.9em;
    color: rgba(255, 255, 255, 0.8);
    font-weight: 500;
}

/* 布局分组行 - 紧凑行布局 */
.form-compact-row {
    display: flex;
    gap: 15px;
    margin-bottom: 20px;
    align-items: flex-start;
    justify-content: space-between;
}

/* 1. 昵称/头像设置行 */
.form-group.form-nickname {
    flex: 0 0 auto;
    /* 改为不增长不收缩 */
    width: 140px;
    /* 固定宽度 */
}

.form-group.form-avatar-controls {
    flex: 0 0 auto;
    /* 改为不增长不收缩 */
    width: 270px;
    /* 固定宽度 */
}

.avatar-selection-area {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-top: 5px;
}

/* 头像样式 - 圆形，与 lyb.css 对齐 */
.avatar-preview {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    color: white;
    font-size: 1.2rem;
    border: 2px solid var(--oj-primary-color);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    overflow: hidden;
    background-size: cover;
    background-position: center;
}

.avatar-toggle {
    display: flex;
    border-radius: 6px;
    overflow: hidden;
    flex-shrink: 0;
    background: rgba(255, 255, 255, 0.1);
}

.avatar-toggle button {
    padding: 8px 16px;
    border: none;
    background-color: transparent;
    color: rgba(255, 255, 255, 0.8);
    transition: all 0.3s ease;
    font-size: 14px;
    cursor: pointer;
}

.avatar-toggle button.active {
    background-color: var(--oj-primary-color);
    color: white;
    font-weight: bold;
}

.avatar-toggle button:hover:not(.active) {
    background-color: rgba(255, 255, 255, 0.15);
}

/* 隐藏的输入选项容器 */
.avatar-input-container {
    margin-top: -10px;
    margin-bottom: 15px;
}

.avatar-selector {
    display: none;
    align-items: center;
    gap: 10px;
    padding-top: 5px;
}

.avatar-selector.active {
    display: flex;
}

#color-selector {
    justify-content: flex-start;
}

#color-selector input[type="color"] {
    width: 60px;
    height: 30px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

#image-selector {
    flex-grow: 1;
}

#image-selector input[type="text"] {
    flex-grow: 1;
}

/* 2. 题目ID和标题行 */
.problem-id-group {
    flex: 0 0 auto;
    /* 改为不增长不收缩 */
    width: 100px;
    /* 固定宽度，比原来的120px短一点 */
}

.discussion-title-group {
    flex: 0 0 auto;
    /* 改为不增长不收缩 */
    width: calc(100% - 120px - 20px);
    /* 计算剩余宽度，120px=100px+20px间距 */
}

/* 输入框和文本域通用样式 - 毛玻璃风格 */
#newDiscussionForm input:not([type="color"]),
#newDiscussionForm textarea,
.reply-input-area textarea {
    box-sizing: border-box;
    width: 100%;
    padding: 10px 12px;
    background-color: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--oj-border-color-light);
    border-radius: 6px;
    color: var(--oj-text-color-light);
    font-size: 0.95em;
    transition: all 0.3s ease;
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
}

#newDiscussionForm input::placeholder,
#newDiscussionForm textarea::placeholder {
    color: rgba(255, 255, 255, 0.6);
}

#newDiscussionForm input:focus,
#newDiscussionForm textarea:focus,
.reply-input-area textarea:focus {
    border-color: var(--oj-primary-color);
    box-shadow: 0 0 0 2px rgba(122, 189, 154, 0.3);
    background-color: rgba(255, 255, 255, 0.15);
    outline: none;
}

#newDiscussionForm textarea {
    min-height: 100px;
    resize: vertical;
    font-family: inherit;
}

/* 按钮样式 - 与 style.css 统一 */
.submit-btn {
    padding: 10px 20px;
    font-size: 0.95em;
    background-color: var(--oj-primary-color);
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: bold;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

.submit-btn:hover {
    background-color: #6da285;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
    transform: translateY(-1px);
}

.mini-btn {
    padding: 6px 12px;
    font-size: 0.85em;
}

.form-submit-row {
    display: flex;
    justify-content: flex-end;
    margin-top: 15px;
}

/* --- 讨论列表样式 --- */
.discussions-list-section h2 {
    color: var(--oj-text-color-light);
    margin-top: 0;
    margin-bottom: 15px;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.discussion-summary {
    background: var(--oj-glass-bg-light);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--oj-border-color-light);
    border-radius: var(--radius);
    color: var(--oj-text-color-light);
    padding: 15px;
    margin-bottom: 15px;
    box-shadow: var(--oj-shadow-light);
    transition: all 0.3s ease;
    cursor: pointer;
}

.discussion-summary:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

.summary-title {
    font-weight: 600;
    font-size: 1.1em;
    color: var(--oj-text-color-light);
    margin-bottom: 8px;
}

.summary-meta {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.85em;
    display: flex;
    align-items: center;
    gap: 15px;
}

.message-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    margin-right: 10px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    color: white;
    font-size: 1rem;
    background-size: cover;
    background-position: center;
    vertical-align: middle;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.problem-tag {
    background-color: var(--oj-primary-color);
    padding: 3px 10px;
    border-radius: 20px;
    color: white;
    font-weight: 500;
    font-size: 0.85em;
    display: inline-block;
}

/* --- 单个讨论详情样式 --- */
.discussion-detail-card {
    background: var(--oj-glass-bg-light);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--oj-border-color-light);
    border-radius: var(--radius);
    color: var(--oj-text-color-light);
    box-shadow: var(--oj-shadow-light);
    padding: 25px;
    margin-top: 20px;
}

.detail-header h1 {
    color: var(--oj-text-color-light);
    font-weight: 700;
    font-size: 1.5em;
    margin-top: 0;
    margin-bottom: 10px;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.detail-meta-row {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9em;
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--oj-border-color-light);
}

.post-content {
    line-height: 1.7;
    color: var(--oj-text-color-light);
    margin-bottom: 25px;
}

.post-content pre {
    background-color: rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 12px;
    border-radius: 6px;
    overflow-x: auto;
    font-family: 'Consolas', 'Courier New', monospace;
    color: #e8e8e8;
    margin: 15px 0;
}

.post-content code {
    background-color: rgba(0, 0, 0, 0.2);
    padding: 2px 6px;
    border-radius: 4px;
    color: #ffcc99;
    font-family: 'Consolas', 'Courier New', monospace;
    font-size: 0.9em;
}

/* 回复区 */
.replies-container {
    margin-top: 25px;
}

.reply-card {
    background-color: rgba(0, 0, 0, 0.1);
    border-left: 4px solid var(--oj-primary-color);
    padding: 15px;
    margin-bottom: 15px;
    border-radius: 0 6px 6px 0;
}

.reply-header {
    display: flex;
    align-items: center;
    margin-bottom: 10px;
}

.reply-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    margin-right: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    color: white;
    font-size: 0.9rem;
    background-size: cover;
    background-position: center;
}

.reply-info {
    flex: 1;
}

.reply-author {
    font-weight: 600;
    color: var(--oj-text-color-light);
}

.reply-time {
    font-size: 0.8em;
    color: rgba(255, 255, 255, 0.6);
}

.reply-content {
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.6;
}

.reply-input-area {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--oj-border-color-light);
}

.action-btn {
    background: none;
    border: none;
    color: rgba(255, 255, 255, 0.7);
    cursor: pointer;
    transition: color 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: 0.9em;
    margin-right: 15px;
}

.action-btn:hover {
    color: var(--oj-primary-color);
}

.back-to-list-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--oj-border-color-light);
    color: var(--oj-text-color-light);
    border-radius: 6px;
    padding: 8px 15px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 15px;
}

.back-to-list-btn:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-1px);
}

/* 分页样式 */
.pagination {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 25px;
}

.page-btn {
    padding: 8px 16px;
    border: 1px solid var(--oj-border-color-light);
    border-radius: 6px;
    background: var(--oj-glass-bg-light);
    color: var(--oj-text-color-light);
    cursor: pointer;
    transition: all 0.3s ease;
}

.page-btn.active {
    background: var(--oj-primary-color);
    color: white;
    border-color: var(--oj-primary-color);
}

.page-btn:hover:not(.active) {
    background: rgba(255, 255, 255, 0.1);
}

/* 移动端调整 */
@media (max-width: 768px) {
    .form-compact-row {
        flex-direction: column;
        gap: 15px;
    }

    .form-group.form-avatar-controls {
        width: 100%;
    }

    .avatar-selection-area {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .avatar-toggle {
        width: 100%;
    }

    .avatar-toggle button {
        flex: 1;
        text-align: center;
    }

    .form-submit-row {
        justify-content: center;
    }

    .detail-meta-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
}