.file-link .file-type-icon {
    display: inline-flex;
    align-items: center;
    gap: 3px;
    margin-right: 5px;
    vertical-align: -3px;
    font-size: 10px;
    font-weight: 600;
    line-height: 1;
    color: var(--text-muted);
}
.file-type-icon svg { width: 17px; height: 17px; flex-shrink: 0; }
.file-type-image { color: #16805b !important; }
.file-type-table { color: #16805b !important; }
.file-type-slides { color: #b85b16 !important; }
.file-type-markdown, .file-type-code { color: #5966bb !important; }
.markdown-viewer {
    margin: auto;
    padding: 0;
    width: min(960px, calc(100vw - 32px));
    max-width: none;
    max-height: calc(100dvh - 32px);
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--bg-input);
    color: var(--text);
    box-shadow: 0 12px 60px #0003;
}
.markdown-viewer::backdrop { background: #0006; }
.markdown-viewer[open] { animation: markdown-appear 220ms cubic-bezier(.2,.8,.2,1) both; }
.markdown-viewer[open]::backdrop { animation: markdown-backdrop 220ms ease both; }
.markdown-viewer.is-closing { animation: markdown-disappear 180ms ease-in both; }
.markdown-viewer.is-closing::backdrop { animation: markdown-backdrop 180ms ease reverse both; }
@keyframes markdown-appear { from { opacity: 0; transform: translateY(12px) scale(.98); } to { opacity: 1; transform: translateY(0) scale(1); } }
@keyframes markdown-disappear { to { opacity: 0; transform: translateY(8px) scale(.985); } }
@keyframes markdown-backdrop { from { background: #0000; } to { background: #0006; } }
.markdown-viewer header {
    position: sticky;
    top: 0;
    z-index: 1;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 20px;
    background: var(--bg-input);
    border-bottom: 1px solid var(--border);
}
.markdown-viewer header > h2 { flex: 1; min-width: 0; margin: 0; font-size: 16px; overflow-wrap: anywhere; }
.markdown-viewer header button, .markdown-download {
    padding: 8px 10px;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--bg-input);
    color: var(--text);
    text-decoration: none;
    font: inherit;
    font-size: 13px;
    cursor: pointer;
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: background-color 160ms ease, color 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}
.markdown-viewer header :is(button, a):hover:not(:disabled) { background: var(--bg-hover, #edf0f4); border-color: #949ba8; box-shadow: 0 2px 5px #0001; }
.markdown-viewer header :is(button, a):focus-visible { outline: 2px solid #5966bb; outline-offset: 3px; }
.markdown-viewer header .markdown-save { background: #16805b; color: #fff; border-color: #16805b; }
.markdown-viewer header .markdown-save:hover:not(:disabled) { background: #116747; border-color: #116747; }
.markdown-viewer header button:disabled { opacity: .6; cursor: wait; }
.markdown-viewer .markdown-close { padding: 8px; margin-left: auto; }
.markdown-source { display: block; box-sizing: border-box; width: calc(100% - 40px); min-height: 55dvh; margin: 20px; padding: 16px; resize: vertical; border: 1px solid var(--border); border-radius: 8px; background: var(--bg-input); color: var(--text); font: 14px/1.7 monospace; }
.markdown-status { margin: 12px 20px; font-size: 13px; color: var(--text-muted); }
.markdown-status:empty { display: none; }
.markdown-viewer [hidden] { display: none !important; }
.message-text a { transition: color 160ms ease; }
.message-text a:hover { color: #7b57b5; }
.message-text a:hover .file-type-icon { filter: brightness(.85); }
.markdown-viewer .markdown-viewer-content { display: block; max-width: none; padding: 20px 28px; overflow-wrap: anywhere; }
.markdown-viewer-content img { max-width: 100%; height: auto; }
.markdown-viewer-content pre, .markdown-viewer-content table { max-width: 100%; overflow-x: auto; }
.btn-copy { background: none; border: none; color: var(--text-muted); cursor: pointer; font-size: 11px; }
@media (max-width: 600px) {
    .markdown-viewer { width: calc(100vw - 16px); max-height: calc(100dvh - 16px); }
    .markdown-viewer header { gap: 6px; padding: 10px; flex-wrap: wrap; }
    .markdown-viewer header h2 { flex-basis: 100%; }
    .markdown-viewer .markdown-viewer-content { padding: 14px; }
}
@media (prefers-reduced-motion: reduce) {
    .markdown-viewer[open], .markdown-viewer.is-closing, .markdown-viewer[open]::backdrop { animation: none; }
    .markdown-viewer header :is(button, a), .message-text a { transition: none; }
}