:root{--font: system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans", "Noto Sans Arabic", Tahoma, sans-serif;--accent: #1f5fbf;--accent-fg: #ffffff;--accent-text: #1f5fbf;--toolbar-bg: var(--accent);--toolbar-fg: var(--accent-fg);--bg: #eef0f3;--viewer-bg: #e6e8ec;--surface: #ffffff;--surface-2: #f1f3f6;--text: #16181d;--muted: #555b66;--border: #d9dde3;--border-strong: #8a919c;--shadow: 0 10px 30px rgb(0 0 0 / .14);--radius: 12px;--bottom-offset: 0px;color-scheme:light}[data-scheme=dark]{--bg: #111317;--viewer-bg: #1b1d22;--surface: #16181d;--surface-2: #23262d;--text: #eef0f3;--muted: #a9afb9;--border: #30343c;--border-strong: #6c7380;--shadow: 0 10px 30px rgb(0 0 0 / 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transparent;font-weight:600;text-decoration:none;cursor:pointer}.btn:disabled{opacity:.55;cursor:not-allowed}.btn-primary{background:var(--accent);color:var(--accent-fg)}.btn-secondary{background:transparent;color:var(--accent-text);border-color:currentColor}.btn-sm{min-height:36px;padding:0 12px;font-size:14px}.btn-block{width:100%}.icon-btn{display:inline-flex;align-items:center;justify-content:center;gap:4px;min-width:40px;height:40px;padding:0 8px;border:0;border-radius:10px;background:transparent;color:inherit}.icon-btn:hover:not(:disabled){background:color-mix(in srgb,currentColor 14%,transparent)}.icon-btn:disabled{opacity:.4;cursor:default}.spinner{width:36px;height:36px;border-radius:50%;border:3px solid color-mix(in srgb,currentColor 25%,transparent);border-top-color:currentColor;animation:spin .8s linear 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