/* ========== Markdown 阅读页：阅读优先 ========== */
.md-page {
    display: flex;
    flex-direction: column;
    padding-top: 16px;
    padding-bottom: 16px;
}

.md-page .page-header {
    margin-bottom: 6px;
}

.md-page .section-header--page {
    padding-top: 2px;
    margin-bottom: 0;
}

.md-page .section-header h1,
.md-page .section-header h2 {
    font-size: 1.45rem;
    padding-bottom: 8px;
}

.md-page .section-header p {
    margin-bottom: 0;
}

.md-toolbar-btn.is-on {
    background: var(--gradient-theme);
    color: var(--color-theme-ink) !important;
}

.md-page main {
    flex: 1 1 auto;
    display: flex;
    flex-direction: column;
    min-height: 0;
}

.md-page main > .section {
    flex: 1 1 auto;
    display: flex;
    flex-direction: column;
    margin-bottom: 0;
}

.md-toolbar {
    margin-bottom: 10px;
    padding: 14px 18px;
    flex-shrink: 0;
}

.md-toolbar .card-icon-title {
    margin-bottom: 8px;
}

.md-catalog {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 0 0 10px;
}

.md-catalog-btn {
    display: inline-flex;
    align-items: center;
    padding: 7px 12px;
    border: 1px solid rgba(0, 0, 0, 0.12);
    background: var(--color-card);
    color: var(--color-theme-ink);
    font-weight: 600;
    font-size: 0.88rem;
    cursor: pointer;
}

.md-catalog-btn:hover,
.md-catalog-btn.is-active {
    background: var(--gradient-theme);
}

.md-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
}

.md-file-label {
    margin-top: 0;
    cursor: pointer;
}

.md-clear-btn,
.md-toggle-btn,
.md-toolbar-btn {
    margin-bottom: 0 !important;
}

.md-toolbar-btn.is-on,
.md-toolbar-btn[aria-pressed="true"] {
    background: var(--gradient-theme);
    color: var(--color-theme-ink) !important;
    border-color: var(--color-ink);
}

.md-status {
    margin: 0;
    color: #5a6c7d;
    font-size: 0.88rem;
}

.md-workspace {
    display: grid;
    grid-template-columns: minmax(220px, 0.34fr) minmax(0, 1fr);
    gap: 18px;
    align-items: stretch;
    flex: 1 1 auto;
    min-height: calc(100vh - 10.5rem);
}

.md-page.is-md-reading .md-workspace,
.md-workspace.is-source-collapsed {
    grid-template-columns: 1fr;
}

.md-page.is-md-reading .md-source-panel,
.md-workspace.is-source-collapsed .md-source-panel {
    display: none;
}

.md-workspace.is-dragover .md-preview,
.md-source-panel.is-dragover {
    outline: 3px solid var(--color-theme);
    outline-offset: -3px;
}

.md-label {
    display: block;
    font-weight: 700;
    color: var(--color-theme-ink);
    margin-bottom: 10px;
    flex-shrink: 0;
}

.md-source-panel {
    display: flex;
    flex-direction: column;
    min-height: calc(100vh - 10.5rem);
}

.md-source {
    width: 100%;
    flex: 1 1 auto;
    min-height: 240px;
    resize: vertical;
    padding: 12px;
    border: 1px solid rgba(0, 0, 0, 0.12);
    background: #fafaf8;
    color: var(--color-ink);
    font-family: var(--font-mono);
    font-size: 0.88rem;
    line-height: 1.55;
}

.md-preview {
    min-height: calc(100vh - 10.5rem);
    overflow-wrap: anywhere;
    display: flex;
    flex-direction: column;
}

.md-preview-body,
.md-preview-inner {
    max-width: 720px;
    width: 100%;
    margin: 0 auto;
    flex: 1 1 auto;
}

.md-placeholder {
    color: #95a5a6;
}

.md-preview h1,
.md-preview h2,
.md-preview h3 {
    color: var(--color-theme-ink);
    margin: 1.1em 0 0.5em;
    line-height: 1.3;
}

.md-preview h1 { font-size: 1.6rem; }
.md-preview h2 { font-size: 1.3rem; }
.md-preview h3 { font-size: 1.1rem; }

.md-preview p,
.md-preview li {
    color: var(--color-body);
    line-height: 1.75;
}

.md-preview a {
    color: #000;
    font-weight: 700;
}

.md-preview pre,
.md-preview code {
    font-family: var(--font-mono);
    background: var(--color-surface-dim);
}

.md-preview code {
    padding: 1px 5px;
    font-size: 0.88em;
}

.md-preview pre {
    padding: 12px;
    overflow-x: auto;
    margin: 12px 0;
}

.md-preview pre code {
    padding: 0;
    background: transparent;
}

.md-preview blockquote {
    margin: 12px 0;
    padding: 8px 12px;
    border-left: 4px solid var(--color-theme);
    color: var(--color-ink-muted);
}

.md-preview table {
    width: 100%;
    border-collapse: collapse;
    margin: 12px 0;
}

.md-preview th,
.md-preview td {
    border: 1px solid rgba(0, 0, 0, 0.12);
    padding: 6px 8px;
    text-align: left;
}

.md-preview img {
    max-width: 100%;
}

@media (max-width: 900px) {
    .md-workspace {
        grid-template-columns: 1fr;
        min-height: 0;
    }

    .md-source-panel {
        min-height: 0;
    }

    .md-source {
        min-height: 180px;
        max-height: 36vh;
    }

    .md-preview {
        min-height: calc(100vh - 9rem);
    }
}