style: add auth page styling

assets/styles/app.css

@@ -0,0 +1,72 @@
+body {
+    background-color: skyblue;
+    font-family: 'Noto Sans', sans-serif;
+}
+
+#actors td {
+    width: 16px;
+    height: 16px;
+}
+
+.auth-container {
+    max-width: 400px;
+    margin: 80px auto;
+    padding: 32px;
+    background: white;
+    border-radius: 8px;
+    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
+}
+
+.auth-container h1 {
+    margin: 0 0 24px;
+    text-align: center;
+}
+
+.auth-container label {
+    display: block;
+    margin-bottom: 4px;
+    font-weight: 600;
+}
+
+.auth-container input[type="email"],
+.auth-container input[type="password"] {
+    width: 100%;
+    padding: 8px 12px;
+    margin-bottom: 16px;
+    border: 1px solid #ccc;
+    border-radius: 4px;
+    font-size: 16px;
+    box-sizing: border-box;
+}
+
+.auth-container button[type="submit"] {
+    width: 100%;
+    padding: 10px;
+    background: #2563eb;
+    color: white;
+    border: none;
+    border-radius: 4px;
+    font-size: 16px;
+    cursor: pointer;
+}
+
+.auth-container button[type="submit"]:hover {
+    background: #1d4ed8;
+}
+
+.auth-error {
+    background: #fef2f2;
+    color: #dc2626;
+    padding: 12px;
+    border-radius: 4px;
+    margin-bottom: 16px;
+}
+
+.auth-link {
+    text-align: center;
+    margin-top: 16px;
+}
+
+.auth-link a {
+    color: #2563eb;
+}