central view

frontend/src/styles.css

@@ -5,7 +5,11 @@
 }
 
 * { box-sizing: border-box; }
-body { margin: 0; }
+html, body, #root { height: 100%; }
+body {
+  margin: 0;
+  overflow: hidden;
+}
 button, input, select {
   font: inherit;
   border-radius: 12px;
@@ -27,9 +31,10 @@ button:disabled { opacity: 0.5; cursor: not-allowed; }
 .layout {
   display: grid;
   grid-template-columns: 360px 1fr;
-  min-height: 100vh;
+  height: 100vh;
   gap: 1rem;
   padding: 1rem;
+  overflow: hidden;
 }
 .card {
   background: white;
@@ -37,7 +42,16 @@ button:disabled { opacity: 0.5; cursor: not-allowed; }
   box-shadow: 0 10px 30px rgba(20,33,61,0.08);
   padding: 1rem;
 }
-.sidebar, .main { display: flex; flex-direction: column; gap: 1rem; }
+.sidebar, .main {
+  display: flex;
+  flex-direction: column;
+  gap: 1rem;
+  min-height: 0;
+  overflow: hidden;
+}
+.sidebar {
+  overflow-y: auto;
+}
 .stack { display: flex; flex-direction: column; gap: 0.75rem; }
 .small-gap { gap: 0.5rem; }
 .hero { display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; }
@@ -59,7 +73,8 @@ button:disabled { opacity: 0.5; cursor: not-allowed; }
   font-size: 0.95rem;
 }
 .instruction-stage {
-  min-height: 180px;
+  flex: 1;
+  min-height: 0;
   display: flex;
   flex-direction: column;
   justify-content: center;
@@ -71,9 +86,11 @@ button:disabled { opacity: 0.5; cursor: not-allowed; }
 }
 .instruction-stage p {
   margin: 0;
-  font-size: 1.25rem;
+  font-size: 1.35rem;
   line-height: 1.5;
   white-space: pre-wrap;
+  max-height: 100%;
+  overflow: auto;
 }
 .stage-label {
   color: #2563eb;
@@ -82,18 +99,19 @@ button:disabled { opacity: 0.5; cursor: not-allowed; }
   text-transform: uppercase;
 }
 .messages {
-  flex: 1;
-  min-height: 220px;
+  flex: 0 0 150px;
+  min-height: 0;
   overflow: auto;
   background: #f8fafc;
   border-radius: 20px;
   padding: 1rem;
 }
 .message {
-  max-width: 80%;
-  margin-bottom: 0.75rem;
-  padding: 0.9rem 1rem;
-  border-radius: 18px;
+  max-width: 92%;
+  margin-bottom: 0.45rem;
+  padding: 0.55rem 0.75rem;
+  border-radius: 12px;
+  font-size: 0.92rem;
 }
 .message.user {
   margin-left: auto;
@@ -102,13 +120,20 @@ button:disabled { opacity: 0.5; cursor: not-allowed; }
 .message.assistant {
   background: #eaf7e7;
 }
-.message p { margin: 0.35rem 0 0; white-space: pre-wrap; }
+.message p {
+  margin: 0.25rem 0 0;
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+}
 .composer {
   display: grid;
   grid-template-columns: 1fr auto auto;
   gap: 0.75rem;
+  flex: 0 0 auto;
 }
 .assessment {
+  flex: 0 0 auto;
   background: #fff7ed;
   padding: 1rem;
   border-radius: 18px;