change to use jinja2 and stop saving file and then reading the data

static/styles.css

@@ -0,0 +1,94 @@
+:root {
+  --text: #e3f2fc;
+  --background: #031621;
+  --primary: #a1c5da;
+  --secondary: #6a139b;
+  --accent: #52ace0;
+}
+
+
+body {
+  font-family: Arial, sans-serif;
+  color: var(--text);
+  margin: 0;
+  background: var(--background);
+  /* fallback dark color */
+}
+
+body::before {
+  content: "";
+  position: fixed;
+  top: 0;
+  left: 0;
+  width: 200vw;
+  height: 200vh;
+  background: radial-gradient(circle at 50% 0%, var(--accent) 0%, var(--background) 70%);
+  animation: moveLight 30s ease-in-out infinite alternate;
+  z-index: -1;
+}
+
+@keyframes moveLight {
+  0% {
+    transform: translate(-50%, -50%);
+  }
+
+  50% {
+    transform: translate(-25%, -40%);
+  }
+
+  100% {
+    transform: translate(0%, -50%);
+  }
+}
+
+.login-box {
+  position: absolute;
+    inset: 0px;
+  width: fit-content;
+  height: fit-content;
+  max-width: 100vw;
+  max-height: 100dvh;
+  margin: auto;
+  background: var(--background);
+  padding: 30px;
+  border-radius: 8px;
+  text-align:  center;
+  border: solid 1px var(--accent);
+  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  width: 300px;
+}
+
+input {
+  width: 100%;
+  padding: 8px;
+  margin: 8px 0;
+  background-color: var(--background);
+  color: var(--text);
+  border: solid 1px var(--accent);
+  border-radius: 8px;
+}
+
+button {
+  margin-top: 1rem;
+  width: 100%;
+  padding: 10px;
+  background: var(--accent);
+  color: var(--background);
+  font-size: large;
+  font-weight: bold;
+  border: none;
+  cursor: pointer;
+}
+
+button:hover {
+  background: var(--primary);
+  color: var(--background);
+}
+
+.error {
+  color: red;
+  margin-top: 10px;
+}