Remove Share modal — copy URL directly on button click

[Copilot]

The Share button previously opened a modal dialog displaying the encoded URL. The requirement is to eliminate the modal entirely and have the button copy the URL to clipboard inline, briefly showing "Copied!".

Changes

• index.html: Removed the entire #share-modal dialog block
• script.js:
  • Replaced modal open/close/keydown logic and shareModalCopy handler with a single copyShareUrl(btn) helper
  • Both shareButton and mobileShareButton call it directly (removed the old delegate)
  • window.location.hash is now set only on successful clipboard write, not unconditionally
• styles.css: Removed the entire SHARE URL MODAL CSS section (~75 lines)

// Before: shareButton click → openShareModal() → user clicks "Copy URL"
// After:
shareButton.addEventListener("click", function () { copyShareUrl(shareButton); });
mobileShareButton.addEventListener("click", function () { copyShareUrl(mobileShareButton); });

On click, the button text changes to ✓ Copied! for 2 seconds, then restores. Falls back to execCommand copy via a transient off-screen textarea for non-secure contexts.

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Project	Deployment	Actions	Updated (UTC)
markdown-viwer	Ready	Preview, Comment	Mar 4, 2026 1:33pm

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