web-cad/frontend/src/components/Topbar.tsx

import React from 'react';
import type { TopbarProps } from '../types/ui.types';

const Topbar: React.FC<TopbarProps> = ({ projectName, savedStatus, onUndo, onRedo, onThemeToggle, theme }) => {
  return (
    <header className="topbar" role="banner">
      <div className="topbar-left">
        <button className="hamburger-btn" aria-label="Werkzeuge öffnen">
          <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><line x1="3" y1="6" x2="21" y2="6"/><line x1="3" y1="12" x2="21" y2="12"/><line x1="3" y1="18" x2="21" y2="18"/></svg>
        </button>
        <div className="app-logo" aria-hidden="true">
          <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.5" stroke-linecap="round" stroke-linejoin="round"><path d="M3 3h18v18H3z"/><path d="M3 9h18"/><path d="M9 21V9"/></svg>
        </div>
        <span className="app-name">web-cad</span>
        <span style={{ color: 'var(--color-border-strong)', margin: '0 4px' }}>|</span>
        <button className="project-name" aria-label="Projekt wechseln">
          <svg width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true"><path d="M3 7a2 2 0 0 1 2-2h4l2 2h7a2 2 0 0 1 2 2v8a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2z"/></svg>
          <span>{projectName}</span>
          <svg className="caret" width="12" height="12" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.5" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true"><polyline points="6 9 12 15 18 9"/></svg>
        </button>
        <span className="saved-badge" aria-label="Status: Alle Änderungen gespeichert">{savedStatus}</span>
      </div>
      <div className="topbar-right">
        <button className="icon-btn-top" aria-label="Rückgängig (Strg+Z)" title="Rückgängig (Strg+Z)" onClick={onUndo}>
          <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M3 7v6h6"/><path d="M21 17a9 9 0 0 0-15-6.7L3 13"/></svg>
        </button>
        <button className="icon-btn-top" aria-label="Wiederherstellen (Strg+Y)" title="Wiederherstellen (Strg+Y)" onClick={onRedo}>
          <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M21 7v6h-6"/><path d="M3 17a9 9 0 0 1 15-6.7L21 13"/></svg>
        </button>
        <span style={{ width: '1px', height: '20px', background: 'var(--color-border)', margin: '0 4px' }}></span>
        <button className="icon-btn-top" aria-label="Versionen" title="Versionsverlauf">
          <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="12" cy="12" r="10"/><polyline points="12 6 12 12 16 14"/></svg>
        </button>
        <button className="icon-btn-top" aria-label="Teilen" title="Projekt teilen">
          <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="18" cy="5" r="3"/><circle cx="6" cy="12" r="3"/><circle cx="18" cy="19" r="3"/><line x1="8.59" y1="13.51" x2="15.42" y2="17.49"/><line x1="15.41" y1="6.51" x2="8.59" y2="10.49"/></svg>
        </button>
        <span style={{ width: '1px', height: '20px', background: 'var(--color-border)', margin: '0 4px' }}></span>
        <button className="icon-btn-top" aria-label="Hell/Dunkel umschalten" title="Theme wechseln" onClick={onThemeToggle}>
          <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="12" cy="12" r="4"/><path d="M12 2v2"/><path d="M12 20v2"/><path d="m4.93 4.93 1.41 1.41"/><path d="m17.66 17.66 1.41 1.41"/><path d="M2 12h2"/><path d="M20 12h2"/><path d="m6.34 17.66-1.41 1.41"/><path d="m19.07 4.93-1.41 1.41"/></svg>
        </button>
        <button className="icon-btn-top" aria-label="Hilfe" title="Hilfe (F1)">
          <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="12" cy="12" r="10"/><path d="M9.09 9a3 3 0 0 1 5.83 1c0 2-3 3-3 3"/><line x1="12" y1="17" x2="12.01" y2="17"/></svg>
        </button>
        <span style={{ width: '1px', height: '20px', background: 'var(--color-border)', margin: '0 4px' }}></span>
        <select className="lang-select" aria-label="Sprache wählen" defaultValue="de">
          <option value="de">DE</option>
          <option value="en">EN</option>
        </select>
        <button className="icon-btn-top" aria-label="Benachrichtigungen" title="Benachrichtigungen">
          <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M6 8a6 6 0 0 1 12 0c0 7 3 9 3 9H3s3-2 3-9"/><path d="M10.3 21a1.94 1.94 0 0 0 3.4 0"/></svg>
        </button>
        <div className="avatar" aria-label="Benutzer Leopold M." title="Leopold M.">LM</div>
      </div>
    </header>
  );
};

export default Topbar;