body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; margin: 0; background: #f5f5f5; }
.header { background: #fff; border-bottom: 1px solid #ddd; padding: 1rem; display: flex; justify-content: space-between; align-items: center; }
.nav { display: flex; gap: 1rem; }
.nav-btn { background: none; border: none; padding: 0.5rem 1rem; cursor: pointer; border-radius: 4px; text-decoration: none; color: inherit; }
.nav-btn:hover { background: #f0f0f0; }
.nav-btn.active { background: #005da3; color: white; }
.admin-btn { background: #dc3545; color: white; }
.admin-btn:hover { background: #c82333; color: white; }
.container { max-width: 600px; margin: 2rem auto; padding: 0 1rem; }
.page { display: none; }
.page.active { display: block; }
.post-form { background: white; padding: 1rem; border-radius: 8px; margin-bottom: 1rem; border: 1px solid #ddd; }
.post-form textarea { width: 100%; padding: 0.5rem; border: 1px solid var(--border-color); border-radius: 4px; resize: vertical; min-height: 80px; font-family: inherit; }
.post-form button { background: #005da3; color: white; border: none; padding: 0.5rem 1rem; border-radius: 4px; cursor: pointer; margin-top: 0.5rem; }
.post { background: white; padding: 1rem; border-radius: 8px; margin-bottom: 1rem; border: 1px solid #ddd; }
.post-header { display: flex; align-items: center; gap: 0.5rem; margin-bottom: 0.5rem; color: #666; font-size: 0.9rem; }
.user-menu { position: relative; }
.user-dropdown { position: absolute; right: 0; top: 100%; background: white; border: 1px solid #ddd; border-radius: 4px; box-shadow: 0 2px 10px rgba(0,0,0,0.1); min-width: 150px; display: none; z-index: 1000; }
.user-dropdown.show { display: block; }
.user-dropdown a { display: block; padding: 0.5rem 1rem; text-decoration: none; color: #333; }
.user-dropdown a:hover { background: #f0f0f0; }
.user-dropdown .admin-link { background: #dc3545; color: white; font-weight: bold; }
.user-dropdown .admin-link:hover { background: #c82333; }
.empty-state { text-align: center; color: #666; padding: 2rem; }