feat: refine frontend typography and branding

frontend/src/app/app.component.ts

@@ -22,12 +22,8 @@ import { MatButtonModule } from '@angular/material/button';
 
       <header class="site-header">
         <div class="header-inner">
-          <a class="brand" routerLink="/">
-            <img class="brand-logo" src="assets/azionelab-logo.png" alt="AzioneLab" />
-            <span class="brand-text">
-              <strong>AzioneLab</strong>
-              <small>Laboratori teatrali & produzioni audio/visive</small>
-            </span>
+          <a class="brand" routerLink="/" aria-label="AzioneLab">
+            <img class="brand-logo" src="assets/azione-lab.jpg" alt="AzioneLab" />
           </a>
 
           <nav class="main-nav" aria-label="Primary navigation">
@@ -102,42 +98,27 @@ import { MatButtonModule } from '@angular/material/button';
       display: grid;
       grid-template-columns: auto 1fr auto;
       align-items: center;
-      gap: 18px;
-      min-height: 82px;
+      gap: 24px;
+      min-height: 92px;
       padding: 0 20px;
     }
 
     .brand {
       display: inline-flex;
       align-items: center;
-      gap: 14px;
+      justify-content: flex-start;
+      flex: 0 0 auto;
       color: inherit;
       text-decoration: none;
     }
 
     .brand-logo {
-      width: 58px;
-      height: 58px;
+      width: 88px;
+      height: 88px;
       display: block;
-      object-fit: contain;
-      filter: drop-shadow(0 14px 30px rgba(111, 40, 33, 0.16));
-    }
-
-    .brand-text {
-      display: flex;
-      flex-direction: column;
-      line-height: 1.05;
-    }
-
-    .brand-text strong {
-      font-family: var(--azionelab-serif);
-      font-size: 1.4rem;
-      font-weight: 700;
-    }
-
-    .brand-text small {
-      color: var(--azionelab-muted);
-      font-size: 0.78rem;
+      object-fit: cover;
+      border-radius: 14px;
+      box-shadow: 0 16px 32px rgba(111, 40, 33, 0.12);
     }
 
     .main-nav {
@@ -205,17 +186,29 @@ import { MatButtonModule } from '@angular/material/button';
     @media (max-width: 800px) {
       .header-inner {
         grid-template-columns: 1fr;
-        align-items: flex-start;
+        align-items: center;
         padding: 16px;
+        gap: 14px;
       }
 
       .main-nav {
         width: 100%;
-        justify-content: flex-start;
+        justify-content: center;
       }
 
       .header-actions {
         width: 100%;
+        justify-content: center;
+      }
+
+      .brand {
+        width: 100%;
+        justify-content: center;
+      }
+
+      .brand-logo {
+        width: 76px;
+        height: 76px;
       }
 
       .footer-inner {