fix: remove previewStyle error, compact logout button padding

dental-server/public/app.js

@@ -465,7 +465,7 @@ function patientCardHTML(p, index) {
 
     return `
     <div class="image-card patient-card" onclick="openPatientByIndex(${index})">
-        <div class="image-preview"${previewStyle}>
+        <div class="image-preview">
             ${preview}
             <button type="button" class="delete-patient-btn" onclick="event.stopPropagation(); deletePatientImages('${escapeHtml(fullName)}')" title="Excluir todas as imagens de ${escapeHtml(fullName)}">🗑️</button>
             <div class="patient-count-badge">${count} imagem${count !== 1 ? 'ns' : ''}</div>

dental-server/public/style.css

@@ -171,19 +171,19 @@ body {
 }
 
 .sidebar-footer {
-    padding: 8px 12px;
     border-top: 1px solid var(--border-color);
     margin-top: auto;
+    padding: 6px 8px;
     flex-shrink: 0;
 }
 
 .logout-btn {
     width: 100%;
-    padding: 8px;
+    padding: 6px 8px;
     background: transparent;
     border: 1px solid var(--glass-border);
     color: #a0aec0;
-    border-radius: 8px;
+    border-radius: 6px;
     cursor: pointer;
     display: flex;
     align-items: center;
@@ -191,8 +191,9 @@ body {
     gap: 6px;
     font-family: 'Inter', sans-serif;
     font-weight: 500;
-    font-size: 0.85rem;
+    font-size: 0.80rem;
     transition: all 0.3s;
+    line-height: 1;
 }
 
 .logout-btn:hover {