/*!
 * PBCS Code Block Plugin
 * 自动代码高亮 + 一键复制 + 行号 + 语言标签 + 暗/亮主题
 *
 * 用法：内容里写 <pre><code>...</code></pre> 即可（class="lang-php" 强制语言）
 * 自动注入：复制按钮 / 语言标签 / 行号 / 主题切换
 */

/* ===== 容器 ===== */
.pbcs-codeblock {
    position: relative;
    margin: 1.25rem 0;
    border-radius: 6px;
    overflow: hidden;
    background: #f6f8fa;
    border: 1px solid #d0d7de;
    box-shadow: 0 1px 0 rgba(31, 35, 40, 0.04);
}
.pbcs-codeblock pre {
    margin: 0;
    padding: 14px 16px 14px 56px; /* 左 56px 给行号 */
    background: transparent;
    color: #24292f;
    font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
    font-size: 13.5px;
    line-height: 1.55;
    overflow-x: auto;
    white-space: pre;
    tab-size: 4;
    -webkit-font-smoothing: antialiased;
}
.pbcs-codeblock code {
    font-family: inherit;
    font-size: inherit;
    background: transparent;
    color: inherit;
    padding: 0;
}

/* 行号（CSS counter 实现，零依赖） */
.pbcs-codeblock pre {
    counter-reset: pbcs-line;
}
.pbcs-codeblock .hljs-ln-line {
    display: block;
    position: relative;
    padding: 0 8px;
    min-height: 1.55em;
}
.pbcs-codeblock .hljs-ln-line::before {
    counter-increment: pbcs-line;
    content: counter(pbcs-line);
    position: absolute;
    left: -44px;
    width: 36px;
    text-align: right;
    color: #8c959f;
    font-size: 12px;
    line-height: 1.55;
    user-select: none;
    pointer-events: none;
}

/* 顶部工具栏（语言标签 + 复制按钮） */
.pbcs-codeblock .pbcs-tools {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 6px 12px;
    background: #eef1f4;
    border-bottom: 1px solid #d0d7de;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
    font-size: 12px;
    color: #57606a;
}
.pbcs-codeblock .pbcs-lang {
    text-transform: uppercase;
    letter-spacing: 0.04em;
    font-weight: 600;
    color: #57606a;
}
.pbcs-codeblock .pbcs-copy {
    cursor: pointer;
    background: transparent;
    border: 1px solid #d0d7de;
    border-radius: 4px;
    padding: 2px 10px;
    font-size: 12px;
    line-height: 1.5;
    color: #24292f;
    background: #ffffff;
    transition: background 0.12s, border-color 0.12s, color 0.12s;
    user-select: none;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}
.pbcs-codeblock .pbcs-copy:hover {
    background: #f3f4f6;
    border-color: #afb8c1;
}
.pbcs-codeblock .pbcs-copy:active {
    background: #ebeef0;
}
.pbcs-codeblock .pbcs-copy.is-success {
    background: #dafbe1;
    border-color: #1f883d;
    color: #1a7f37;
}
.pbcs-codeblock .pbcs-copy.is-error {
    background: #ffebe9;
    border-color: #cf222e;
    color: #cf222e;
}
.pbcs-codeblock .pbcs-copy .fa { font-size: 11px; }

/* ===== highlight.js GitHub 主题（亮色）===== */
.pbcs-codeblock .hljs { color: #24292f; background: transparent; }
.pbcs-codeblock .hljs-comment, .pbcs-codeblock .hljs-quote { color: #6e7781; font-style: italic; }
.pbcs-codeblock .hljs-keyword, .pbcs-codeblock .hljs-selector-tag, .pbcs-codeblock .hljs-subst { color: #cf222e; }
.pbcs-codeblock .hljs-number, .pbcs-codeblock .hljs-literal, .pbcs-codeblock .hljs-variable, .pbcs-codeblock .hljs-template-variable, .pbcs-codeblock .hljs-tag .hljs-attr { color: #0550ae; }
.pbcs-codeblock .hljs-string, .pbcs-codeblock .hljs-doctag { color: #0a3069; }
.pbcs-codeblock .hljs-title, .pbcs-codeblock .hljs-section, .pbcs-codeblock .hljs-selector-id { color: #8250df; font-weight: 600; }
.pbcs-codeblock .hljs-subst { font-weight: normal; }
.pbcs-codeblock .hljs-class .hljs-title, .pbcs-codeblock .hljs-type, .pbcs-codeblock .hljs-built_in, .pbcs-codeblock .hljs-builtin-name { color: #953800; }
.pbcs-codeblock .hljs-symbol, .pbcs-codeblock .hljs-bullet, .pbcs-codeblock .hljs-link { color: #0550ae; }
.pbcs-codeblock .hljs-meta, .pbcs-codeblock .hljs-deletion { color: #82071e; }
.pbcs-codeblock .hljs-emphasis { font-style: italic; }
.pbcs-codeblock .hljs-strong { font-weight: 700; }
.pbcs-codeblock .hljs-attribute { color: #0550ae; }
.pbcs-codeblock .hljs-doctag, .pbcs-codeblock .hljs-name, .pbcs-codeblock .hljs-string { color: #0a3069; }
.pbcs-codeblock .hljs-built_in, .pbcs-codeblock .hljs-builtin-name { color: #953800; }

/* PHP 关键字/变量 */
.pbcs-codeblock .hljs-php .hljs-variable, .pbcs-codeblock .hljs-php .hljs-attribute { color: #24292f; }
.pbcs-codeblock .hljs-php .hljs-keyword { color: #cf222e; }
.pbcs-codeblock .hljs-php .hljs-string { color: #0a3069; }
.pbcs-codeblock .hljs-php .hljs-title { color: #8250df; }

/* ===== 暗色主题 ===== */
@media (prefers-color-scheme: dark) {
    .pbcs-codeblock {
        background: #161b22;
        border-color: #30363d;
    }
    .pbcs-codeblock pre {
        color: #e6edf3;
    }
    .pbcs-codeblock .pbcs-tools {
        background: #1c2128;
        border-bottom-color: #30363d;
        color: #8b949e;
    }
    .pbcs-codeblock .pbcs-lang { color: #8b949e; }
    .pbcs-codeblock .pbcs-copy {
        background: #21262d;
        border-color: #30363d;
        color: #e6edf3;
    }
    .pbcs-codeblock .pbcs-copy:hover { background: #30363d; }
    .pbcs-codeblock .pbcs-copy.is-success {
        background: #1f3a2b; border-color: #3fb950; color: #3fb950;
    }
    .pbcs-codeblock .pbcs-copy.is-error {
        background: #4d1f23; border-color: #f85149; color: #f85149;
    }
    .pbcs-codeblock .hljs-ln-line::before { color: #6e7681; }

    /* GitHub Dark 主题 */
    .pbcs-codeblock .hljs { color: #e6edf3; }
    .pbcs-codeblock .hljs-comment, .pbcs-codeblock .hljs-quote { color: #8b949e; }
    .pbcs-codeblock .hljs-keyword, .pbcs-codeblock .hljs-selector-tag, .pbcs-codeblock .hljs-subst { color: #ff7b72; }
    .pbcs-codeblock .hljs-number, .pbcs-codeblock .hljs-literal, .pbcs-codeblock .hljs-variable, .pbcs-codeblock .hljs-template-variable, .pbcs-codeblock .hljs-tag .hljs-attr { color: #79c0ff; }
    .pbcs-codeblock .hljs-string, .pbcs-codeblock .hljs-doctag { color: #a5d6ff; }
    .pbcs-codeblock .hljs-title, .pbcs-codeblock .hljs-section, .pbcs-codeblock .hljs-selector-id { color: #d2a8ff; font-weight: 600; }
    .pbcs-codeblock .hljs-class .hljs-title, .pbcs-codeblock .hljs-type, .pbcs-codeblock .hljs-built_in, .pbcs-codeblock .hljs-builtin-name { color: #ffa657; }
    .pbcs-codeblock .hljs-symbol, .pbcs-codeblock .hljs-bullet, .pbcs-codeblock .hljs-link { color: #79c0ff; }
    .pbcs-codeblock .hljs-meta, .pbcs-codeblock .hljs-deletion { color: #ffa198; }
}

/* ===== 移动端 ===== */
@media (max-width: 575.98px) {
    .pbcs-codeblock pre { padding-left: 38px; font-size: 12.5px; }
    .pbcs-codeblock .hljs-ln-line::before { left: -32px; width: 24px; font-size: 11px; }
    .pbcs-codeblock .pbcs-tools { padding: 5px 8px; font-size: 11px; }
    .pbcs-codeblock .pbcs-copy { padding: 2px 7px; font-size: 11px; }
}

/* ===== 段落内联 <code>（不进入完整代码块流程）===== */
:not(.pbcs-codeblock) > code {
    background: rgba(175, 184, 193, 0.2);
    color: #24292f;
    padding: 0.2em 0.4em;
    border-radius: 6px;
    font-size: 0.9em;
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
@media (prefers-color-scheme: dark) {
    :not(.pbcs-codeblock) > code {
        background: rgba(110, 118, 129, 0.4);
        color: #e6edf3;
    }
}

/* ===== 防止与内容编辑器自带样式冲突 ===== */
.pbcs-codeblock pre code.hljs { padding: 0; background: transparent; }