Update: 2026-05-13

scene_visualization.html

@@ -96,6 +96,70 @@
       font-weight: 600;
     }
 
+    /* Buttons */
+    .btn {
+      display: inline-flex;
+      align-items: center;
+      justify-content: center;
+      gap: var(--space-2);
+      padding: var(--space-4) var(--space-8);
+      border-radius: var(--radius-full);
+      font-size: 1rem;
+      font-weight: 600;
+      font-family: 'Outfit', sans-serif;
+      cursor: pointer;
+      border: none;
+      transition: all var(--transition-base);
+      min-height: 56px;
+      min-width: 160px;
+    }
+
+    .btn-primary {
+      background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
+      color: white;
+      box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
+    }
+
+    .btn-primary:hover {
+      transform: translateY(-2px);
+      box-shadow: 0 6px 25px rgba(99, 102, 241, 0.5);
+    }
+
+    .btn-primary:active {
+      transform: translateY(0);
+    }
+
+    .btn-secondary {
+      background: var(--bg-card);
+      color: var(--text-primary);
+      box-shadow: var(--shadow-sm);
+    }
+
+    .btn-secondary:hover {
+      background: var(--bg-secondary);
+    }
+
+    .btn-ghost {
+      background: transparent;
+      color: var(--text-secondary);
+      min-width: auto;
+      padding: var(--space-3) var(--space-4);
+    }
+
+    .btn-icon {
+      width: 56px;
+      height: 56px;
+      padding: 0;
+      border-radius: var(--radius-lg);
+    }
+
+    .btn svg {
+      width: 20px;
+      height: 20px;
+      stroke: currentColor;
+      fill: none;
+    }
+
     .app {
       max-width: 720px;
       margin: 0 auto;
@@ -106,18 +170,55 @@
     .header {
       display: flex;
       align-items: center;
-      gap: var(--space-4);
-      margin-bottom: var(--space-8);
-      padding-top: var(--space-2);
+      justify-content: space-between;
+      padding: var(--space-4) var(--space-6);
+      background: var(--bg-card);
+      box-shadow: var(--shadow-sm);
+      position: sticky;
+      top: 0;
+      z-index: 100;
+    }
+
+    .header-left {
+      display: flex;
+      align-items: center;
+      gap: var(--space-3);
+    }
+
+    .header-logo {
+      width: 40px;
+      height: 40px;
+      background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
+      border-radius: var(--radius-md);
+      display: flex;
+      align-items: center;
+      justify-content: center;
+    }
+
+    .header-logo svg {
+      width: 24px;
+      height: 24px;
+      fill: white;
+    }
+
+    .header-title {
+      font-family: 'Outfit', sans-serif;
+      font-size: 1.25rem;
+      font-weight: 600;
+    }
+
+    .header-right {
+      display: flex;
+      align-items: center;
+      gap: var(--space-3);
     }
 
     .back-btn {
       width: 40px;
       height: 40px;
-      border-radius: var(--radius-sm);
-      border: 1px solid var(--bg-secondary);
-      background: var(--bg-card);
-      color: var(--text-secondary);
+      border-radius: var(--radius-md);
+      background: var(--bg-secondary);
+      border: none;
       display: flex;
       align-items: center;
       justify-content: center;
@@ -127,21 +228,14 @@
     }
 
     .back-btn:hover {
-      border-color: var(--primary-light);
-      color: var(--primary);
-      background: var(--bg-card);
+      background: var(--primary-light);
+      color: white;
     }
 
     .back-btn svg {
       width: 20px;
       height: 20px;
-    }
-
-    .header-title {
-      font-family: 'Outfit', sans-serif;
-      font-size: 1.375rem;
-      font-weight: 600;
-      letter-spacing: -0.3px;
+      stroke: currentColor;
     }
 
     /* Comparison Banner */
@@ -715,13 +809,21 @@
   <div class="app">
     <!-- Header -->
     <header class="header">
-      <button class="back-btn" onclick="window.location.href='index.html'" aria-label="Go back">
-        <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
-          <path d="M19 12H5M12 19l-7-7 7-7"/>
-        </svg>
-        뒤로
-      </button>
-      <h1 class="header-title">구조 제안</h1>
+      <div class="header-left">
+        <div class="header-logo">
+          <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
+            <path d="M22 19a2 2 0 01-2 2H4a2 2 0 01-2-2V5a2 2 0 012-2h5l2 3h9a2 2 0 012 2z"/>
+          </svg>
+        </div>
+        <h1 class="header-title">구조 제안</h1>
+      </div>
+      <div class="header-right">
+        <button class="back-btn" onclick="window.location.href='index.html'" aria-label="Go back">
+          <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
+            <path d="M19 12H5M12 19l-7-7 7-7"/>
+          </svg>
+        </button>
+      </div>
     </header>