update frontend ui, i18n, filters, and deps

frontend/assets/css/main.css

@@ -11,7 +11,7 @@
 body {
   margin: 0;
   font-family: "Space Grotesk", system-ui, sans-serif;
-  background: var(--bg);
+  background: linear-gradient(135deg, #f5f1e8 0%, #efe6d6 100%);
   color: var(--text);
 }
 
@@ -26,6 +26,45 @@ a {
   padding: 24px;
 }
 
+.app-header {
+  position: sticky;
+  top: 0;
+  z-index: 20;
+  background: rgba(245, 241, 232, 0.9);
+  backdrop-filter: blur(6px);
+  border-bottom: 1px solid #e3d8c5;
+}
+
+.header-content {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 16px;
+}
+
+.brand {
+  font-weight: 700;
+  font-size: 20px;
+  color: #3a2a1a;
+}
+
+.nav-links {
+  display: flex;
+  gap: 12px;
+  flex-wrap: wrap;
+}
+
+.nav-links a {
+  padding: 6px 10px;
+  border-radius: 10px;
+  border: 1px solid transparent;
+}
+
+.nav-links a.router-link-active {
+  border-color: #c46b2d;
+  background: #fffaf2;
+}
+
 .hero {
   display: grid;
   gap: 12px;
@@ -42,4 +81,62 @@ a {
   border-radius: 16px;
   padding: 16px;
   background: #fffaf2;
+  box-shadow: 0 8px 20px rgba(60, 40, 20, 0.08);
+}
+
+.app-footer {
+  margin-top: 40px;
+  border-top: 1px solid #e3d8c5;
+  padding: 16px 0;
+}
+
+button.card {
+  cursor: pointer;
+  transition: transform 0.15s ease, box-shadow 0.15s ease;
+}
+
+button.card:disabled {
+  opacity: 0.6;
+  cursor: not-allowed;
+}
+
+button.card:hover:not(:disabled) {
+  transform: translateY(-2px);
+  box-shadow: 0 10px 24px rgba(60, 40, 20, 0.12);
+}
+
+input,
+textarea,
+select {
+  padding: 10px 12px;
+  border-radius: 10px;
+  border: 1px solid #d9c9b2;
+  font: inherit;
+  background: #fffaf2;
+}
+
+.modal-overlay {
+  position: fixed;
+  inset: 0;
+  background: rgba(20, 15, 10, 0.45);
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  z-index: 50;
+}
+
+.modal-card {
+  background: #fffaf2;
+  border-radius: 16px;
+  padding: 20px;
+  border: 1px solid #e3d8c5;
+  max-width: 420px;
+  width: 90%;
+}
+
+.modal-actions {
+  display: flex;
+  gap: 8px;
+  justify-content: flex-end;
+  margin-top: 16px;
 }