Changed around line 1
+ :root {
+ --primary-color: #4a90e2;
+ --secondary-color: #f5f5f5;
+ --text-color: #333;
+ --border-radius: 8px;
+ --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
+ }
+
+ body {
+ font-family: 'Segoe UI', sans-serif;
+ line-height: 1.6;
+ color: var(--text-color);
+ margin: 0;
+ padding: 0;
+ background-color: var(--secondary-color);
+ }
+
+ header {
+ background-color: var(--primary-color);
+ color: white;
+ padding: 2rem;
+ text-align: center;
+ }
+
+ h1 {
+ font-size: 2.5rem;
+ margin-bottom: 0.5rem;
+ }
+
+ main {
+ max-width: 800px;
+ margin: 2rem auto;
+ padding: 0 1rem;
+ }
+
+ section {
+ background: white;
+ padding: 2rem;
+ border-radius: var(--border-radius);
+ box-shadow: var(--box-shadow);
+ margin-bottom: 2rem;
+ }
+
+ form {
+ display: flex;
+ flex-direction: column;
+ gap: 1rem;
+ }
+
+ label {
+ font-weight: bold;
+ }
+
+ input[type="file"] {
+ padding: 0.5rem;
+ border: 1px solid #ddd;
+ border-radius: var(--border-radius);
+ }
+
+ button {
+ background-color: var(--primary-color);
+ color: white;
+ padding: 0.75rem;
+ border: none;
+ border-radius: var(--border-radius);
+ cursor: pointer;
+ transition: background-color 0.3s ease;
+ }
+
+ button:hover {
+ background-color: darken(var(--primary-color), 10%);
+ }
+
+ #results-section {
+ text-align: center;
+ }
+
+ #graph-container {
+ margin: 2rem 0;
+ }
+
+ #download-link {
+ display: inline-block;
+ background-color: var(--primary-color);
+ color: white;
+ padding: 0.75rem 1.5rem;
+ border-radius: var(--border-radius);
+ text-decoration: none;
+ transition: background-color 0.3s ease;
+ }
+
+ #download-link:hover {
+ background-color: darken(var(--primary-color), 10%);
+ }
+
+ .hidden {
+ display: none;
+ }
+
+ @media (max-width: 600px) {
+ h1 {
+ font-size: 2rem;
+ }
+
+ main {
+ padding: 0 0.5rem;
+ }
+
+ section {
+ padding: 1rem;
+ }
+ }