/* code-highlight */
/* ===== 高亮与行号样式 ===== */
.post-content pre code {
    white-space: pre-wrap;
    word-break: break-word;
}
.post-content pre {
    position: relative;
    padding-top: 2.6em;
    overflow: auto;
}

.post-content pre .code-block-lang {
    position: absolute;
    top: 0.4em;
    left: 0.4em;
    padding: 0.2em 0.8em;
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-color: rgba(255, 255, 255, 0.1);
    color: var(--text-muted, #aaa);
    font-size: var(--font-size-xs, 12px);
    font-weight: 600;
    border-radius: 6px;
    text-transform: lowercase;
    user-select: none;
    pointer-events: none;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.code-line-numbers {
    display: block;
    counter-reset: code-line;
}
.code-line-number {
    position: relative;
    display: block;
    min-height: 1.4em;
    padding-left: calc(var(--code-line-number-width, 2ch) + 0.95em);
    white-space: pre-wrap;
    word-break: break-word;
}
.code-line-number::before {
    position: absolute;
    left: 0;
    width: var(--code-line-number-width, 2ch);
    padding-right: 0.45em;
    border-right: 1px solid var(--inverse-border);
    color: var(--text-disabled);
    content: counter(code-line);
    counter-increment: code-line;
    text-align: right;
    user-select: none;
    pointer-events: none;
}
.post-content pre.code-line-numbers-pre {
    overflow: auto;
}

.hljs {
    white-space: pre-wrap !important;
    word-break: break-word !important;
}

.post-content pre.code-highlight-loading {
    position: relative;
    min-height: 3em;
}
.post-content pre.code-highlight-loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 1.5em;
    height: 1.5em;
    margin: -0.75em 0 0 -0.75em;
    border: 2px solid var(--line-soft);
    border-top-color: var(--brand);
    border-radius: 50%;
    animation: code-highlight-spin 0.8s linear infinite;
    pointer-events: none;
}
@keyframes code-highlight-spin {
    to { transform: rotate(360deg); }
}

/* ===== 复制按钮样式 ===== */
.code-copy-wrap {
    position: relative;
    display: block;
    min-width: 0;
    margin: 10px 0;
}
.code-copy-wrap > pre {
    margin: 0;
}
.code-copy-button {
    position: absolute;
    z-index: 2;
    top: 9px;
    right: 9px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    padding: 0;
    border: 1px solid rgba(255, 255, 255, .2);
    border-radius: 6px;
    background: rgba(17, 24, 39, .58);
    color: rgba(255, 255, 255, .82);
    box-shadow: 0 2px 8px rgba(0, 0, 0, .18);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-3px);
    cursor: pointer;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    transition: opacity var(--transition-normal), transform var(--transition-normal), background-color var(--transition-normal), border-color var(--transition-normal), color var(--transition-normal);
}
.code-copy-button svg {
    display: block;
    width: 17px;
    height: 17px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}
.code-copy-wrap:hover > .code-copy-button,
.code-copy-wrap:focus-within > .code-copy-button,
.code-copy-button.is-copied,
.code-copy-button.is-failed {
    opacity: 1;
    pointer-events: auto;
    transform: none;
}
.code-copy-button:hover {
    border-color: rgba(255, 255, 255, .38);
    background: rgba(17, 24, 39, .82);
    color: #fff;
}
.code-copy-button:focus-visible {
    opacity: 1;
    pointer-events: auto;
    transform: none;
    outline: 2px solid var(--focus-ring);
    outline-offset: 2px;
}
.code-copy-button.is-copied {
    border-color: var(--success);
    color: var(--success);
}
.code-copy-button.is-failed {
    border-color: var(--danger);
    color: var(--danger);
}
@media (hover: none) {
    .code-copy-button {
        opacity: .68;
        pointer-events: auto;
        transform: none;
    }
}
@media (prefers-reduced-motion: reduce) {
    .code-copy-button {
        transition: none;
    }
}